source: tags/4.5.2/src/wp-includes/query.php

<?php
/**
 * WordPress Query API
 *
 * The query API attempts to get which part of WordPress the user is on. It
 * also provides functionality for getting URL query information.
 *
 * @link https://codex.wordpress.org/The_Loop More information on The Loop.
 *
 * @package WordPress
 * @subpackage Query
 */

/**
 * Retrieve variable in the WP_Query class.
 *
 * @since 1.5.0
 * @since 3.9.0 The `$default` argument was introduced.
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string $var       The variable key to retrieve.
 * @param mixed  $default   Optional. Value to return if the query variable is not set. Default empty.
 * @return mixed Contents of the query variable.
 */
function get_query_var( $var, $default = '' ) {
        global $wp_query;
        return $wp_query->get( $var, $default );
}

/**
 * Retrieve the currently-queried object.
 *
 * Wrapper for WP_Query::get_queried_object().
 *
 * @since 3.1.0
 * @access public
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return object Queried object.
 */
function get_queried_object() {
        global $wp_query;
        return $wp_query->get_queried_object();
}

/**
 * Retrieve ID of the current queried object.
 *
 * Wrapper for WP_Query::get_queried_object_id().
 *
 * @since 3.1.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return int ID of the queried object.
 */
function get_queried_object_id() {
        global $wp_query;
        return $wp_query->get_queried_object_id();
}

/**
 * Set query variable.
 *
 * @since 2.2.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string $var   Query variable key.
 * @param mixed  $value Query variable value.
 */
function set_query_var( $var, $value ) {
        global $wp_query;
        $wp_query->set( $var, $value );
}

/**
 * Set up The Loop with query parameters.
 *
 * This will override the current WordPress Loop and shouldn't be used more than
 * once. This must not be used within the WordPress Loop.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string $query
 * @return array List of posts
 */
function query_posts($query) {
        $GLOBALS['wp_query'] = new WP_Query();
        return $GLOBALS['wp_query']->query($query);
}

/**
 * Destroy the previous query and set up a new query.
 *
 * This should be used after {@link query_posts()} and before another {@link
 * query_posts()}. This will remove obscure bugs that occur when the previous
 * wp_query object is not destroyed properly before another is set up.
 *
 * @since 2.3.0
 *
 * @global WP_Query $wp_query     Global WP_Query instance.
 * @global WP_Query $wp_the_query Copy of the global WP_Query instance created during wp_reset_query().
 */
function wp_reset_query() {
        $GLOBALS['wp_query'] = $GLOBALS['wp_the_query'];
        wp_reset_postdata();
}

/**
 * After looping through a separate query, this function restores
 * the $post global to the current post in the main query.
 *
 * @since 3.0.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 */
function wp_reset_postdata() {
        global $wp_query;

        if ( isset( $wp_query ) ) {
                $wp_query->reset_postdata();
        }
}

/*
 * Query type checks.
 */

/**
 * Is the query for an existing archive page?
 *
 * Month, Year, Category, Author, Post Type archive...
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_archive() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_archive();
}

/**
 * Is the query for an existing post type archive page?
 *
 * @since 3.1.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string|array $post_types Optional. Post type or array of posts types to check against.
 * @return bool
 */
function is_post_type_archive( $post_types = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_post_type_archive( $post_types );
}

/**
 * Is the query for an existing attachment page?
 *
 * @since 2.0.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param int|string|array|object $attachment Attachment ID, title, slug, or array of such.
 * @return bool
 */
function is_attachment( $attachment = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_attachment( $attachment );
}

/**
 * Is the query for an existing author archive page?
 *
 * If the $author parameter is specified, this function will additionally
 * check if the query is for one of the authors specified.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param mixed $author Optional. User ID, nickname, nicename, or array of User IDs, nicknames, and nicenames
 * @return bool
 */
function is_author( $author = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_author( $author );
}

/**
 * Is the query for an existing category archive page?
 *
 * If the $category parameter is specified, this function will additionally
 * check if the query is for one of the categories specified.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param mixed $category Optional. Category ID, name, slug, or array of Category IDs, names, and slugs.
 * @return bool
 */
function is_category( $category = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_category( $category );
}

/**
 * Is the query for an existing tag archive page?
 *
 * If the $tag parameter is specified, this function will additionally
 * check if the query is for one of the tags specified.
 *
 * @since 2.3.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param mixed $tag Optional. Tag ID, name, slug, or array of Tag IDs, names, and slugs.
 * @return bool
 */
function is_tag( $tag = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_tag( $tag );
}

/**
 * Is the query for an existing taxonomy archive page?
 *
 * If the $taxonomy parameter is specified, this function will additionally
 * check if the query is for that specific $taxonomy.
 *
 * If the $term parameter is specified in addition to the $taxonomy parameter,
 * this function will additionally check if the query is for one of the terms
 * specified.
 *
 * @since 2.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string|array     $taxonomy Optional. Taxonomy slug or slugs.
 * @param int|string|array $term     Optional. Term ID, name, slug or array of Term IDs, names, and slugs.
 * @return bool
 */
function is_tax( $taxonomy = '', $term = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_tax( $taxonomy, $term );
}

/**
 * Is the query for an existing date archive?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_date() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_date();
}

/**
 * Is the query for an existing day archive?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_day() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_day();
}

/**
 * Is the query for a feed?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string|array $feeds Optional feed types to check.
 * @return bool
 */
function is_feed( $feeds = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_feed( $feeds );
}

/**
 * Is the query for a comments feed?
 *
 * @since 3.0.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_comment_feed() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_comment_feed();
}

/**
 * Is the query for the front page of the site?
 *
 * This is for what is displayed at your site's main URL.
 *
 * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
 *
 * If you set a static page for the front page of your site, this function will return
 * true when viewing that page.
 *
 * Otherwise the same as @see is_home()
 *
 * @since 2.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool True, if front of site.
 */
function is_front_page() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_front_page();
}

/**
 * Is the query for the blog homepage?
 *
 * This is the page which shows the time based blog content of your site.
 *
 * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_for_posts'.
 *
 * If you set a static page for the front page of your site, this function will return
 * true only on the page you set as the "Posts page".
 *
 * @see is_front_page()
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool True if blog view homepage.
 */
function is_home() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_home();
}

/**
 * Is the query for an existing month archive?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_month() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_month();
}

/**
 * Is the query for an existing single page?
 *
 * If the $page parameter is specified, this function will additionally
 * check if the query is for one of the pages specified.
 *
 * @see is_single()
 * @see is_singular()
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param int|string|array $page Optional. Page ID, title, slug, or array of such. Default empty.
 * @return bool Whether the query is for an existing single page.
 */
function is_page( $page = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_page( $page );
}

/**
 * Is the query for paged result and not for the first page?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_paged() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_paged();
}

/**
 * Is the query for a post or page preview?
 *
 * @since 2.0.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_preview() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_preview();
}

/**
 * Is the query for the robots file?
 *
 * @since 2.1.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_robots() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_robots();
}

/**
 * Is the query for a search?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_search() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_search();
}

/**
 * Is the query for an existing single post?
 *
 * Works for any post type, except attachments and pages
 *
 * If the $post parameter is specified, this function will additionally
 * check if the query is for one of the Posts specified.
 *
 * @see is_page()
 * @see is_singular()
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param int|string|array $post Optional. Post ID, title, slug, or array of such. Default empty.
 * @return bool Whether the query is for an existing single post.
 */
function is_single( $post = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_single( $post );
}

/**
 * Is the query for an existing single post of any post type (post, attachment, page, ... )?
 *
 * If the $post_types parameter is specified, this function will additionally
 * check if the query is for one of the Posts Types specified.
 *
 * @see is_page()
 * @see is_single()
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param string|array $post_types Optional. Post type or array of post types. Default empty.
 * @return bool Whether the query is for an existing single post of any of the given post types.
 */
function is_singular( $post_types = '' ) {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_singular( $post_types );
}

/**
 * Is the query for a specific time?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_time() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_time();
}

/**
 * Is the query for a trackback endpoint call?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_trackback() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_trackback();
}

/**
 * Is the query for an existing year archive?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_year() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_year();
}

/**
 * Is the query a 404 (returns no results)?
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_404() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_404();
}

/**
 * Is the query for an embedded post?
 *
 * @since 4.4.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool Whether we're in an embedded post or not.
 */
function is_embed() {
        global $wp_query;

        if ( ! isset( $wp_query ) ) {
                _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
                return false;
        }

        return $wp_query->is_embed();
}

/**
 * Is the query the main query?
 *
 * @since 3.3.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function is_main_query() {
        if ( 'pre_get_posts' === current_filter() ) {
                $message = sprintf(
                        /* translators: 1: pre_get_posts 2: WP_Query->is_main_query() 3: is_main_query() 4: link to codex is_main_query() page. */
                        __( 'In %1$s, use the %2$s method, not the %3$s function. See %4$s.' ),
                        '<code>pre_get_posts</code>',
                        '<code>WP_Query->is_main_query()</code>',
                        '<code>is_main_query()</code>',
                        __( 'https://codex.wordpress.org/Function_Reference/is_main_query' )
                );
                _doing_it_wrong( __FUNCTION__, $message, '3.7' );
        }

        global $wp_query;
        return $wp_query->is_main_query();
}

/*
 * The Loop. Post loop control.
 */

/**
 * Whether current WordPress query has results to loop over.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function have_posts() {
        global $wp_query;
        return $wp_query->have_posts();
}

/**
 * Whether the caller is in the Loop.
 *
 * @since 2.0.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool True if caller is within loop, false if loop hasn't started or ended.
 */
function in_the_loop() {
        global $wp_query;
        return $wp_query->in_the_loop;
}

/**
 * Rewind the loop posts.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 */
function rewind_posts() {
        global $wp_query;
        $wp_query->rewind_posts();
}

/**
 * Iterate the post index in the loop.
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 */
function the_post() {
        global $wp_query;
        $wp_query->the_post();
}

/*
 * Comments loop.
 */

/**
 * Whether there are comments to loop over.
 *
 * @since 2.2.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return bool
 */
function have_comments() {
        global $wp_query;
        return $wp_query->have_comments();
}

/**
 * Iterate comment index in the comment loop.
 *
 * @since 2.2.0
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @return object
 */
function the_comment() {
        global $wp_query;
        return $wp_query->the_comment();
}

/*
 * WP_Query
 */

/**
 * The WordPress Query class.
 *
 * @link https://codex.wordpress.org/Function_Reference/WP_Query Codex page.
 *
 * @since 1.5.0
 * @since 4.5.0 Removed the `$comments_popup` property.
 */
class WP_Query {

        /**
         * Query vars set by the user
         *
         * @since 1.5.0
         * @access public
         * @var array
         */
        public $query;

        /**
         * Query vars, after parsing
         *
         * @since 1.5.0
         * @access public
         * @var array
         */
        public $query_vars = array();

        /**
         * Taxonomy query, as passed to get_tax_sql()
         *
         * @since 3.1.0
         * @access public
         * @var object WP_Tax_Query
         */
        public $tax_query;

        /**
         * Metadata query container
         *
         * @since 3.2.0
         * @access public
         * @var object WP_Meta_Query
         */
        public $meta_query = false;

        /**
         * Date query container
         *
         * @since 3.7.0
         * @access public
         * @var object WP_Date_Query
         */
        public $date_query = false;

        /**
         * Holds the data for a single object that is queried.
         *
         * Holds the contents of a post, page, category, attachment.
         *
         * @since 1.5.0
         * @access public
         * @var object|array
         */
        public $queried_object;

        /**
         * The ID of the queried object.
         *
         * @since 1.5.0
         * @access public
         * @var int
         */
        public $queried_object_id;

        /**
         * Get post database query.
         *
         * @since 2.0.1
         * @access public
         * @var string
         */
        public $request;

        /**
         * List of posts.
         *
         * @since 1.5.0
         * @access public
         * @var array
         */
        public $posts;

        /**
         * The amount of posts for the current query.
         *
         * @since 1.5.0
         * @access public
         * @var int
         */
        public $post_count = 0;

        /**
         * Index of the current item in the loop.
         *
         * @since 1.5.0
         * @access public
         * @var int
         */
        public $current_post = -1;

        /**
         * Whether the loop has started and the caller is in the loop.
         *
         * @since 2.0.0
         * @access public
         * @var bool
         */
        public $in_the_loop = false;

        /**
         * The current post.
         *
         * @since 1.5.0
         * @access public
         * @var WP_Post
         */
        public $post;

        /**
         * The list of comments for current post.
         *
         * @since 2.2.0
         * @access public
         * @var array
         */
        public $comments;

        /**
         * The amount of comments for the posts.
         *
         * @since 2.2.0
         * @access public
         * @var int
         */
        public $comment_count = 0;

        /**
         * The index of the comment in the comment loop.
         *
         * @since 2.2.0
         * @access public
         * @var int
         */
        public $current_comment = -1;

        /**
         * Current comment ID.
         *
         * @since 2.2.0
         * @access public
         * @var int
         */
        public $comment;

        /**
         * The amount of found posts for the current query.
         *
         * If limit clause was not used, equals $post_count.
         *
         * @since 2.1.0
         * @access public
         * @var int
         */
        public $found_posts = 0;

        /**
         * The amount of pages.
         *
         * @since 2.1.0
         * @access public
         * @var int
         */
        public $max_num_pages = 0;

        /**
         * The amount of comment pages.
         *
         * @since 2.7.0
         * @access public
         * @var int
         */
        public $max_num_comment_pages = 0;

        /**
         * Set if query is single post.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_single = false;

        /**
         * Set if query is preview of blog.
         *
         * @since 2.0.0
         * @access public
         * @var bool
         */
        public $is_preview = false;

        /**
         * Set if query returns a page.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_page = false;

        /**
         * Set if query is an archive list.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_archive = false;

        /**
         * Set if query is part of a date.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_date = false;

        /**
         * Set if query contains a year.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_year = false;

        /**
         * Set if query contains a month.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_month = false;

        /**
         * Set if query contains a day.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_day = false;

        /**
         * Set if query contains time.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_time = false;

        /**
         * Set if query contains an author.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_author = false;

        /**
         * Set if query contains category.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_category = false;

        /**
         * Set if query contains tag.
         *
         * @since 2.3.0
         * @access public
         * @var bool
         */
        public $is_tag = false;

        /**
         * Set if query contains taxonomy.
         *
         * @since 2.5.0
         * @access public
         * @var bool
         */
        public $is_tax = false;

        /**
         * Set if query was part of a search result.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_search = false;

        /**
         * Set if query is feed display.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_feed = false;

        /**
         * Set if query is comment feed display.
         *
         * @since 2.2.0
         * @access public
         * @var bool
         */
        public $is_comment_feed = false;

        /**
         * Set if query is trackback.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_trackback = false;

        /**
         * Set if query is blog homepage.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_home = false;

        /**
         * Set if query couldn't found anything.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_404 = false;

        /**
         * Set if query is embed.
         *
         * @since 4.4.0
         * @access public
         * @var bool
         */
        public $is_embed = false;

        /**
         * Set if query is paged
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_paged = false;

        /**
         * Set if query is part of administration page.
         *
         * @since 1.5.0
         * @access public
         * @var bool
         */
        public $is_admin = false;

        /**
         * Set if query is an attachment.
         *
         * @since 2.0.0
         * @access public
         * @var bool
         */
        public $is_attachment = false;

        /**
         * Set if is single, is a page, or is an attachment.
         *
         * @since 2.1.0
         * @access public
         * @var bool
         */
        public $is_singular = false;

        /**
         * Set if query is for robots.
         *
         * @since 2.1.0
         * @access public
         * @var bool
         */
        public $is_robots = false;

        /**
         * Set if query contains posts.
         *
         * Basically, the homepage if the option isn't set for the static homepage.
         *
         * @since 2.1.0
         * @access public
         * @var bool
         */
        public $is_posts_page = false;

        /**
         * Set if query is for a post type archive.
         *
         * @since 3.1.0
         * @access public
         * @var bool
         */
        public $is_post_type_archive = false;

        /**
         * Stores the ->query_vars state like md5(serialize( $this->query_vars ) ) so we know
         * whether we have to re-parse because something has changed
         *
         * @since 3.1.0
         * @access private
         * @var bool|string
         */
        private $query_vars_hash = false;

        /**
         * Whether query vars have changed since the initial parse_query() call. Used to catch modifications to query vars made
         * via pre_get_posts hooks.
         *
         * @since 3.1.1
         * @access private
         */
        private $query_vars_changed = true;

        /**
         * Set if post thumbnails are cached
         *
         * @since 3.2.0
         * @access public
         * @var bool
         */
         public $thumbnails_cached = false;

        /**
         * Cached list of search stopwords.
         *
         * @since 3.7.0
         * @var array
         */
        private $stopwords;

        private $compat_fields = array( 'query_vars_hash', 'query_vars_changed' );

        private $compat_methods = array( 'init_query_flags', 'parse_tax_query' );

        /**
         * Resets query flags to false.
         *
         * The query flags are what page info WordPress was able to figure out.
         *
         * @since 2.0.0
         * @access private
         */
        private function init_query_flags() {
                $this->is_single = false;
                $this->is_preview = false;
                $this->is_page = false;
                $this->is_archive = false;
                $this->is_date = false;
                $this->is_year = false;
                $this->is_month = false;
                $this->is_day = false;
                $this->is_time = false;
                $this->is_author = false;
                $this->is_category = false;
                $this->is_tag = false;
                $this->is_tax = false;
                $this->is_search = false;
                $this->is_feed = false;
                $this->is_comment_feed = false;
                $this->is_trackback = false;
                $this->is_home = false;
                $this->is_404 = false;
                $this->is_paged = false;
                $this->is_admin = false;
                $this->is_attachment = false;
                $this->is_singular = false;
                $this->is_robots = false;
                $this->is_posts_page = false;
                $this->is_post_type_archive = false;
        }

        /**
         * Initiates object properties and sets default values.
         *
         * @since 1.5.0
         * @access public
         */
        public function init() {
                unset($this->posts);
                unset($this->query);
                $this->query_vars = array();
                unset($this->queried_object);
                unset($this->queried_object_id);
                $this->post_count = 0;
                $this->current_post = -1;
                $this->in_the_loop = false;
                unset( $this->request );
                unset( $this->post );
                unset( $this->comments );
                unset( $this->comment );
                $this->comment_count = 0;
                $this->current_comment = -1;
                $this->found_posts = 0;
                $this->max_num_pages = 0;
                $this->max_num_comment_pages = 0;

                $this->init_query_flags();
        }

        /**
         * Reparse the query vars.
         *
         * @since 1.5.0
         * @access public
         */
        public function parse_query_vars() {
                $this->parse_query();
        }

        /**
         * Fills in the query variables, which do not exist within the parameter.
         *
         * @since 2.1.0
         * @since 4.4.0 Removed the `comments_popup` public query variable.
         * @access public
         *
         * @param array $array Defined query variables.
         * @return array Complete query variables with undefined ones filled in empty.
         */
        public function fill_query_vars($array) {
                $keys = array(
                        'error'
                        , 'm'
                        , 'p'
                        , 'post_parent'
                        , 'subpost'
                        , 'subpost_id'
                        , 'attachment'
                        , 'attachment_id'
                        , 'name'
                        , 'static'
                        , 'pagename'
                        , 'page_id'
                        , 'second'
                        , 'minute'
                        , 'hour'
                        , 'day'
                        , 'monthnum'
                        , 'year'
                        , 'w'
                        , 'category_name'
                        , 'tag'
                        , 'cat'
                        , 'tag_id'
                        , 'author'
                        , 'author_name'
                        , 'feed'
                        , 'tb'
                        , 'paged'
                        , 'meta_key'
                        , 'meta_value'
                        , 'preview'
                        , 's'
                        , 'sentence'
                        , 'title'
                        , 'fields'
                        , 'menu_order'
                        , 'embed'
                );

                foreach ( $keys as $key ) {
                        if ( !isset($array[$key]) )
                                $array[$key] = '';
                }

                $array_keys = array( 'category__in', 'category__not_in', 'category__and', 'post__in', 'post__not_in', 'post_name__in',
                        'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'post_parent__in', 'post_parent__not_in',
                        'author__in', 'author__not_in' );

                foreach ( $array_keys as $key ) {
                        if ( !isset($array[$key]) )
                                $array[$key] = array();
                }
                return $array;
        }

        /**
         * Parse a query string and set query type booleans.
         *
         * @since 1.5.0
         * @since 4.2.0 Introduced the ability to order by specific clauses of a `$meta_query`, by passing the clause's
         *              array key to `$orderby`.
         * @since 4.4.0 Introduced `$post_name__in` and `$title` parameters. `$s` was updated to support excluded
         *              search terms, by prepending a hyphen.
         * @since 4.5.0 Removed the `$comments_popup` parameter.
         *              Introduced the `$comment_status` and `$ping_status` parameters.
         *              Introduced `RAND(x)` syntax for `$orderby`, which allows an integer seed value to random sorts.
         * @access public
         *
         * @param string|array $query {
         *     Optional. Array or string of Query parameters.
         *
         *     @type int          $attachment_id           Attachment post ID. Used for 'attachment' post_type.
         *     @type int|string   $author                  Author ID, or comma-separated list of IDs.
         *     @type string       $author_name             User 'user_nicename'.
         *     @type array        $author__in              An array of author IDs to query from.
         *     @type array        $author__not_in          An array of author IDs not to query from.
         *     @type bool         $cache_results           Whether to cache post information. Default true.
         *     @type int|string   $cat                     Category ID or comma-separated list of IDs (this or any children).
         *     @type array        $category__and           An array of category IDs (AND in).
         *     @type array        $category__in            An array of category IDs (OR in, no children).
         *     @type array        $category__not_in        An array of category IDs (NOT in).
         *     @type string       $category_name           Use category slug (not name, this or any children).
         *     @type string       $comment_status          Comment status.
         *     @type int          $comments_per_page       The number of comments to return per page.
         *                                                 Default 'comments_per_page' option.
         *     @type array        $date_query              An associative array of WP_Date_Query arguments.
         *                                                 {@see WP_Date_Query::__construct()}
         *     @type int          $day                     Day of the month. Default empty. Accepts numbers 1-31.
         *     @type bool         $exact                   Whether to search by exact keyword. Default false.
         *     @type string|array $fields                  Which fields to return. Single field or all fields (string),
         *                                                 or array of fields. 'id=>parent' uses 'id' and 'post_parent'.
         *                                                 Default all fields. Accepts 'ids', 'id=>parent'.
         *     @type int          $hour                    Hour of the day. Default empty. Accepts numbers 0-23.
         *     @type int|bool     $ignore_sticky_posts     Whether to ignore sticky posts or not. Setting this to false
         *                                                 excludes stickies from 'post__in'. Accepts 1|true, 0|false.
         *                                                 Default 0|false.
         *     @type int          $m                       Combination YearMonth. Accepts any four-digit year and month
         *                                                 numbers 1-12. Default empty.
         *     @type string       $meta_compare            Comparison operator to test the 'meta_value'.
         *     @type string       $meta_key                Custom field key.
         *     @type array        $meta_query              An associative array of WP_Meta_Query arguments.
         *                                                 {@see WP_Meta_Query}
         *     @type string       $meta_value              Custom field value.
         *     @type int          $meta_value_num          Custom field value number.
         *     @type int          $menu_order              The menu order of the posts.
         *     @type int          $monthnum                The two-digit month. Default empty. Accepts numbers 1-12.
         *     @type string       $name                    Post slug.
         *     @type bool         $nopaging                Show all posts (true) or paginate (false). Default false.
         *     @type bool         $no_found_rows           Whether to skip counting the total rows found. Enabling can improve
         *                                                 performance. Default false.
         *     @type int          $offset                  The number of posts to offset before retrieval.
         *     @type string       $order                   Designates ascending or descending order of posts. Default 'DESC'.
         *                                                 Accepts 'ASC', 'DESC'.
         *     @type string|array $orderby                 Sort retrieved posts by parameter. One or more options may be
         *                                                 passed. To use 'meta_value', or 'meta_value_num',
         *                                                 'meta_key=keyname' must be also be defined. To sort by a
         *                                                 specific `$meta_query` clause, use that clause's array key.
         *                                                 Default 'date'. Accepts 'none', 'name', 'author', 'date',
         *                                                 'title', 'modified', 'menu_order', 'parent', 'ID', 'rand',
         *                                                 'RAND(x)' (where 'x' is an integer seed value),
         *                                                 'comment_count', 'meta_value', 'meta_value_num', 'post__in',
         *                                                 and the array keys of `$meta_query`.
         *     @type int          $p                       Post ID.
         *     @type int          $page                    Show the number of posts that would show up on page X of a
         *                                                 static front page.
         *     @type int          $paged                   The number of the current page.
         *     @type int          $page_id                 Page ID.
         *     @type string       $pagename                Page slug.
         *     @type string       $perm                    Show posts if user has the appropriate capability.
         *     @type string       $ping_status             Ping status.
         *     @type array        $post__in                An array of post IDs to retrieve, sticky posts will be included
         *     @type string       $post_mime_type          The mime type of the post. Used for 'attachment' post_type.
         *     @type array        $post__not_in            An array of post IDs not to retrieve. Note: a string of comma-
         *                                                 separated IDs will NOT work.
         *     @type int          $post_parent             Page ID to retrieve child pages for. Use 0 to only retrieve
         *                                                 top-level pages.
         *     @type array        $post_parent__in         An array containing parent page IDs to query child pages from.
         *     @type array        $post_parent__not_in     An array containing parent page IDs not to query child pages from.
         *     @type string|array $post_type               A post type slug (string) or array of post type slugs.
         *                                                 Default 'any' if using 'tax_query'.
         *     @type string|array $post_status             A post status (string) or array of post statuses.
         *     @type int          $posts_per_page          The number of posts to query for. Use -1 to request all posts.
         *     @type int          $posts_per_archive_page  The number of posts to query for by archive page. Overrides
         *                                                 'posts_per_page' when is_archive(), or is_search() are true.
         *     @type array        $post_name__in           An array of post slugs that results must match.
         *     @type string       $s                       Search keyword(s). Prepending a term with a hyphen will
         *                                                 exclude posts matching that term. Eg, 'pillow -sofa' will
         *                                                 return posts containing 'pillow' but not 'sofa'.
         *     @type int          $second                  Second of the minute. Default empty. Accepts numbers 0-60.
         *     @type bool         $sentence                Whether to search by phrase. Default false.
         *     @type bool         $suppress_filters        Whether to suppress filters. Default false.
         *     @type string       $tag                     Tag slug. Comma-separated (either), Plus-separated (all).
         *     @type array        $tag__and                An array of tag ids (AND in).
         *     @type array        $tag__in                 An array of tag ids (OR in).
         *     @type array        $tag__not_in             An array of tag ids (NOT in).
         *     @type int          $tag_id                  Tag id or comma-separated list of IDs.
         *     @type array        $tag_slug__and           An array of tag slugs (AND in).
         *     @type array        $tag_slug__in            An array of tag slugs (OR in). unless 'ignore_sticky_posts' is
         *                                                 true. Note: a string of comma-separated IDs will NOT work.
         *     @type array        $tax_query               An associative array of WP_Tax_Query arguments.
         *                                                 {@see WP_Tax_Query->queries}
         *     @type string       $title                   Post title.
         *     @type bool         $update_post_meta_cache  Whether to update the post meta cache. Default true.
         *     @type bool         $update_post_term_cache  Whether to update the post term cache. Default true.
         *     @type int          $w                       The week number of the year. Default empty. Accepts numbers 0-53.
         *     @type int          $year                    The four-digit year. Default empty. Accepts any four-digit year.
         * }
         */
        public function parse_query( $query =  '' ) {
                if ( ! empty( $query ) ) {
                        $this->init();
                        $this->query = $this->query_vars = wp_parse_args( $query );
                } elseif ( ! isset( $this->query ) ) {
                        $this->query = $this->query_vars;
                }

                $this->query_vars = $this->fill_query_vars($this->query_vars);
                $qv = &$this->query_vars;
                $this->query_vars_changed = true;

                if ( ! empty($qv['robots']) )
                        $this->is_robots = true;

                $qv['p'] =  absint($qv['p']);
                $qv['page_id'] =  absint($qv['page_id']);
                $qv['year'] = absint($qv['year']);
                $qv['monthnum'] = absint($qv['monthnum']);
                $qv['day'] = absint($qv['day']);
                $qv['w'] = absint($qv['w']);
                $qv['m'] = preg_replace( '|[^0-9]|', '', $qv['m'] );
                $qv['paged'] = absint($qv['paged']);
                $qv['cat'] = preg_replace( '|[^0-9,-]|', '', $qv['cat'] ); // comma separated list of positive or negative integers
                $qv['author'] = preg_replace( '|[^0-9,-]|', '', $qv['author'] ); // comma separated list of positive or negative integers
                $qv['pagename'] = trim( $qv['pagename'] );
                $qv['name'] = trim( $qv['name'] );
                $qv['title'] = trim( $qv['title'] );
                if ( '' !== $qv['hour'] ) $qv['hour'] = absint($qv['hour']);
                if ( '' !== $qv['minute'] ) $qv['minute'] = absint($qv['minute']);
                if ( '' !== $qv['second'] ) $qv['second'] = absint($qv['second']);
                if ( '' !== $qv['menu_order'] ) $qv['menu_order'] = absint($qv['menu_order']);

                // Fairly insane upper bound for search string lengths.
                if ( ! is_scalar( $qv['s'] ) || ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 ) ) {
                        $qv['s'] = '';
                }

                // Compat. Map subpost to attachment.
                if ( '' != $qv['subpost'] )
                        $qv['attachment'] = $qv['subpost'];
                if ( '' != $qv['subpost_id'] )
                        $qv['attachment_id'] = $qv['subpost_id'];

                $qv['attachment_id'] = absint($qv['attachment_id']);

                if ( ('' != $qv['attachment']) || !empty($qv['attachment_id']) ) {
                        $this->is_single = true;
                        $this->is_attachment = true;
                } elseif ( '' != $qv['name'] ) {
                        $this->is_single = true;
                } elseif ( $qv['p'] ) {
                        $this->is_single = true;
                } elseif ( ('' !== $qv['hour']) && ('' !== $qv['minute']) &&('' !== $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day']) ) {
                        // If year, month, day, hour, minute, and second are set, a single
                        // post is being queried.
                        $this->is_single = true;
                } elseif ( '' != $qv['static'] || '' != $qv['pagename'] || !empty($qv['page_id']) ) {
                        $this->is_page = true;
                        $this->is_single = false;
                } else {
                        // Look for archive queries. Dates, categories, authors, search, post type archives.

                        if ( isset( $this->query['s'] ) ) {
                                $this->is_search = true;
                        }

                        if ( '' !== $qv['second'] ) {
                                $this->is_time = true;
                                $this->is_date = true;
                        }

                        if ( '' !== $qv['minute'] ) {
                                $this->is_time = true;
                                $this->is_date = true;
                        }

                        if ( '' !== $qv['hour'] ) {
                                $this->is_time = true;
                                $this->is_date = true;
                        }

                        if ( $qv['day'] ) {
                                if ( ! $this->is_date ) {
                                        $date = sprintf( '%04d-%02d-%02d', $qv['year'], $qv['monthnum'], $qv['day'] );
                                        if ( $qv['monthnum'] && $qv['year'] && ! wp_checkdate( $qv['monthnum'], $qv['day'], $qv['year'], $date ) ) {
                                                $qv['error'] = '404';
                                        } else {
                                                $this->is_day = true;
                                                $this->is_date = true;
                                        }
                                }
                        }

                        if ( $qv['monthnum'] ) {
                                if ( ! $this->is_date ) {
                                        if ( 12 < $qv['monthnum'] ) {
                                                $qv['error'] = '404';
                                        } else {
                                                $this->is_month = true;
                                                $this->is_date = true;
                                        }
                                }
                        }

                        if ( $qv['year'] ) {
                                if ( ! $this->is_date ) {
                                        $this->is_year = true;
                                        $this->is_date = true;
                                }
                        }

                        if ( $qv['m'] ) {
                                $this->is_date = true;
                                if ( strlen($qv['m']) > 9 ) {
                                        $this->is_time = true;
                                } elseif ( strlen( $qv['m'] ) > 7 ) {
                                        $this->is_day = true;
                                } elseif ( strlen( $qv['m'] ) > 5 ) {
                                        $this->is_month = true;
                                } else {
                                        $this->is_year = true;
                                }
                        }

                        if ( '' != $qv['w'] ) {
                                $this->is_date = true;
                        }

                        $this->query_vars_hash = false;
                        $this->parse_tax_query( $qv );

                        foreach ( $this->tax_query->queries as $tax_query ) {
                                if ( ! is_array( $tax_query ) ) {
                                        continue;
                                }

                                if ( isset( $tax_query['operator'] ) && 'NOT IN' != $tax_query['operator'] ) {
                                        switch ( $tax_query['taxonomy'] ) {
                                                case 'category':
                                                        $this->is_category = true;
                                                        break;
                                                case 'post_tag':
                                                        $this->is_tag = true;
                                                        break;
                                                default:
                                                        $this->is_tax = true;
                                        }
                                }
                        }
                        unset( $tax_query );

                        if ( empty($qv['author']) || ($qv['author'] == '0') ) {
                                $this->is_author = false;
                        } else {
                                $this->is_author = true;
                        }

                        if ( '' != $qv['author_name'] )
                                $this->is_author = true;

                        if ( !empty( $qv['post_type'] ) && ! is_array( $qv['post_type'] ) ) {
                                $post_type_obj = get_post_type_object( $qv['post_type'] );
                                if ( ! empty( $post_type_obj->has_archive ) )
                                        $this->is_post_type_archive = true;
                        }

                        if ( $this->is_post_type_archive || $this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax )
                                $this->is_archive = true;
                }

                if ( '' != $qv['feed'] )
                        $this->is_feed = true;

                if ( '' != $qv['embed'] ) {
                        $this->is_embed = true;
                }

                if ( '' != $qv['tb'] )
                        $this->is_trackback = true;

                if ( '' != $qv['paged'] && ( intval($qv['paged']) > 1 ) )
                        $this->is_paged = true;

                // if we're previewing inside the write screen
                if ( '' != $qv['preview'] )
                        $this->is_preview = true;

                if ( is_admin() )
                        $this->is_admin = true;

                if ( false !== strpos($qv['feed'], 'comments-') ) {
                        $qv['feed'] = str_replace('comments-', '', $qv['feed']);
                        $qv['withcomments'] = 1;
                }

                $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;

                if ( $this->is_feed && ( !empty($qv['withcomments']) || ( empty($qv['withoutcomments']) && $this->is_singular ) ) )
                        $this->is_comment_feed = true;

                if ( !( $this->is_singular || $this->is_archive || $this->is_search || $this->is_feed || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) || $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_robots ) )
                        $this->is_home = true;

                // Correct is_* for page_on_front and page_for_posts
                if ( $this->is_home && 'page' == get_option('show_on_front') && get_option('page_on_front') ) {
                        $_query = wp_parse_args($this->query);
                        // pagename can be set and empty depending on matched rewrite rules. Ignore an empty pagename.
                        if ( isset($_query['pagename']) && '' == $_query['pagename'] )
                                unset($_query['pagename']);

                        unset( $_query['embed'] );

                        if ( empty($_query) || !array_diff( array_keys($_query), array('preview', 'page', 'paged', 'cpage') ) ) {
                                $this->is_page = true;
                                $this->is_home = false;
                                $qv['page_id'] = get_option('page_on_front');
                                // Correct <!--nextpage--> for page_on_front
                                if ( !empty($qv['paged']) ) {
                                        $qv['page'] = $qv['paged'];
                                        unset($qv['paged']);
                                }
                        }
                }

                if ( '' != $qv['pagename'] ) {
                        $this->queried_object = get_page_by_path( $qv['pagename'] );

                        if ( $this->queried_object && 'attachment' == $this->queried_object->post_type ) {
                                if ( preg_match( "/^[^%]*%(?:postname)%/", get_option( 'permalink_structure' ) ) ) {
                                        // See if we also have a post with the same slug
                                        $post = get_page_by_path( $qv['pagename'], OBJECT, 'post' );
                                        if ( $post ) {
                                                $this->queried_object = $post;
                                                $this->is_page = false;
                                                $this->is_single = true;
                                        }
                                }
                        }

                        if ( ! empty( $this->queried_object ) ) {
                                $this->queried_object_id = (int) $this->queried_object->ID;
                        } else {
                                unset( $this->queried_object );
                        }

                        if  ( 'page' == get_option('show_on_front') && isset($this->queried_object_id) && $this->queried_object_id == get_option('page_for_posts') ) {
                                $this->is_page = false;
                                $this->is_home = true;
                                $this->is_posts_page = true;
                        }
                }

                if ( $qv['page_id'] ) {
                        if  ( 'page' == get_option('show_on_front') && $qv['page_id'] == get_option('page_for_posts') ) {
                                $this->is_page = false;
                                $this->is_home = true;
                                $this->is_posts_page = true;
                        }
                }

                if ( !empty($qv['post_type']) ) {
                        if ( is_array($qv['post_type']) )
                                $qv['post_type'] = array_map('sanitize_key', $qv['post_type']);
                        else
                                $qv['post_type'] = sanitize_key($qv['post_type']);
                }

                if ( ! empty( $qv['post_status'] ) ) {
                        if ( is_array( $qv['post_status'] ) )
                                $qv['post_status'] = array_map('sanitize_key', $qv['post_status']);
                        else
                                $qv['post_status'] = preg_replace('|[^a-z0-9_,-]|', '', $qv['post_status']);
                }

                if ( $this->is_posts_page && ( ! isset($qv['withcomments']) || ! $qv['withcomments'] ) )
                        $this->is_comment_feed = false;

                $this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;
                // Done correcting is_* for page_on_front and page_for_posts

                if ( '404' == $qv['error'] )
                        $this->set_404();

                $this->is_embed = $this->is_embed && ( $this->is_singular || $this->is_404 );

                $this->query_vars_hash = md5( serialize( $this->query_vars ) );
                $this->query_vars_changed = false;

                /**
                 * Fires after the main query vars have been parsed.
                 *
                 * @since 1.5.0
                 *
                 * @param WP_Query &$this The WP_Query instance (passed by reference).
                 */
                do_action_ref_array( 'parse_query', array( &$this ) );
        }

        /**
         * Parses various taxonomy related query vars.
         *
         * For BC, this method is not marked as protected. See [28987].
         *
         * @access protected
         * @since 3.1.0
         *
         * @param array $q The query variables. Passed by reference.
         */
        public function parse_tax_query( &$q ) {
                if ( ! empty( $q['tax_query'] ) && is_array( $q['tax_query'] ) ) {
                        $tax_query = $q['tax_query'];
                } else {
                        $tax_query = array();
                }

                if ( !empty($q['taxonomy']) && !empty($q['term']) ) {
                        $tax_query[] = array(
                                'taxonomy' => $q['taxonomy'],
                                'terms' => array( $q['term'] ),
                                'field' => 'slug',
                        );
                }

                foreach ( get_taxonomies( array() , 'objects' ) as $taxonomy => $t ) {
                        if ( 'post_tag' == $taxonomy )
                                continue;       // Handled further down in the $q['tag'] block

                        if ( $t->query_var && !empty( $q[$t->query_var] ) ) {
                                $tax_query_defaults = array(
                                        'taxonomy' => $taxonomy,
                                        'field' => 'slug',
                                );

                                if ( isset( $t->rewrite['hierarchical'] ) && $t->rewrite['hierarchical'] ) {
                                        $q[$t->query_var] = wp_basename( $q[$t->query_var] );
                                }

                                $term = $q[$t->query_var];

                                if ( is_array( $term ) ) {
                                        $term = implode( ',', $term );
                                }

                                if ( strpos($term, '+') !== false ) {
                                        $terms = preg_split( '/[+]+/', $term );
                                        foreach ( $terms as $term ) {
                                                $tax_query[] = array_merge( $tax_query_defaults, array(
                                                        'terms' => array( $term )
                                                ) );
                                        }
                                } else {
                                        $tax_query[] = array_merge( $tax_query_defaults, array(
                                                'terms' => preg_split( '/[,]+/', $term )
                                        ) );
                                }
                        }
                }

                // If querystring 'cat' is an array, implode it.
                if ( is_array( $q['cat'] ) ) {
                        $q['cat'] = implode( ',', $q['cat'] );
                }

                // Category stuff
                if ( ! empty( $q['cat'] ) && ! $this->is_singular ) {
                        $cat_in = $cat_not_in = array();

                        $cat_array = preg_split( '/[,\s]+/', urldecode( $q['cat'] ) );
                        $cat_array = array_map( 'intval', $cat_array );
                        $q['cat'] = implode( ',', $cat_array );

                        foreach ( $cat_array as $cat ) {
                                if ( $cat > 0 )
                                        $cat_in[] = $cat;
                                elseif ( $cat < 0 )
                                        $cat_not_in[] = abs( $cat );
                        }

                        if ( ! empty( $cat_in ) ) {
                                $tax_query[] = array(
                                        'taxonomy' => 'category',
                                        'terms' => $cat_in,
                                        'field' => 'term_id',
                                        'include_children' => true
                                );
                        }

                        if ( ! empty( $cat_not_in ) ) {
                                $tax_query[] = array(
                                        'taxonomy' => 'category',
                                        'terms' => $cat_not_in,
                                        'field' => 'term_id',
                                        'operator' => 'NOT IN',
                                        'include_children' => true
                                );
                        }
                        unset( $cat_array, $cat_in, $cat_not_in );
                }

                if ( ! empty( $q['category__and'] ) && 1 === count( (array) $q['category__and'] ) ) {
                        $q['category__and'] = (array) $q['category__and'];
                        if ( ! isset( $q['category__in'] ) )
                                $q['category__in'] = array();
                        $q['category__in'][] = absint( reset( $q['category__and'] ) );
                        unset( $q['category__and'] );
                }

                if ( ! empty( $q['category__in'] ) ) {
                        $q['category__in'] = array_map( 'absint', array_unique( (array) $q['category__in'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'category',
                                'terms' => $q['category__in'],
                                'field' => 'term_id',
                                'include_children' => false
                        );
                }

                if ( ! empty($q['category__not_in']) ) {
                        $q['category__not_in'] = array_map( 'absint', array_unique( (array) $q['category__not_in'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'category',
                                'terms' => $q['category__not_in'],
                                'operator' => 'NOT IN',
                                'include_children' => false
                        );
                }

                if ( ! empty($q['category__and']) ) {
                        $q['category__and'] = array_map( 'absint', array_unique( (array) $q['category__and'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'category',
                                'terms' => $q['category__and'],
                                'field' => 'term_id',
                                'operator' => 'AND',
                                'include_children' => false
                        );
                }

                // If querystring 'tag' is array, implode it.
                if ( is_array( $q['tag'] ) ) {
                        $q['tag'] = implode( ',', $q['tag'] );
                }

                // Tag stuff
                if ( '' != $q['tag'] && !$this->is_singular && $this->query_vars_changed ) {
                        if ( strpos($q['tag'], ',') !== false ) {
                                $tags = preg_split('/[,\r\n\t ]+/', $q['tag']);
                                foreach ( (array) $tags as $tag ) {
                                        $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
                                        $q['tag_slug__in'][] = $tag;
                                }
                        } elseif ( preg_match('/[+\r\n\t ]+/', $q['tag'] ) || ! empty( $q['cat'] ) ) {
                                $tags = preg_split('/[+\r\n\t ]+/', $q['tag']);
                                foreach ( (array) $tags as $tag ) {
                                        $tag = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db');
                                        $q['tag_slug__and'][] = $tag;
                                }
                        } else {
                                $q['tag'] = sanitize_term_field('slug', $q['tag'], 0, 'post_tag', 'db');
                                $q['tag_slug__in'][] = $q['tag'];
                        }
                }

                if ( !empty($q['tag_id']) ) {
                        $q['tag_id'] = absint( $q['tag_id'] );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag_id']
                        );
                }

                if ( !empty($q['tag__in']) ) {
                        $q['tag__in'] = array_map('absint', array_unique( (array) $q['tag__in'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag__in']
                        );
                }

                if ( !empty($q['tag__not_in']) ) {
                        $q['tag__not_in'] = array_map('absint', array_unique( (array) $q['tag__not_in'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag__not_in'],
                                'operator' => 'NOT IN'
                        );
                }

                if ( !empty($q['tag__and']) ) {
                        $q['tag__and'] = array_map('absint', array_unique( (array) $q['tag__and'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag__and'],
                                'operator' => 'AND'
                        );
                }

                if ( !empty($q['tag_slug__in']) ) {
                        $q['tag_slug__in'] = array_map('sanitize_title_for_query', array_unique( (array) $q['tag_slug__in'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag_slug__in'],
                                'field' => 'slug'
                        );
                }

                if ( !empty($q['tag_slug__and']) ) {
                        $q['tag_slug__and'] = array_map('sanitize_title_for_query', array_unique( (array) $q['tag_slug__and'] ) );
                        $tax_query[] = array(
                                'taxonomy' => 'post_tag',
                                'terms' => $q['tag_slug__and'],
                                'field' => 'slug',
                                'operator' => 'AND'
                        );
                }

                $this->tax_query = new WP_Tax_Query( $tax_query );

                /**
                 * Fires after taxonomy-related query vars have been parsed.
                 *
                 * @since 3.7.0
                 *
                 * @param WP_Query $this The WP_Query instance.
                 */
                do_action( 'parse_tax_query', $this );
        }

        /**
         * Generate SQL for the WHERE clause based on passed search terms.
         *
         * @since 3.7.0
         *
         * @global wpdb $wpdb WordPress database abstraction object.
         *
         * @param array $q Query variables.
         * @return string WHERE clause.
         */
        protected function parse_search( &$q ) {
                global $wpdb;

                $search = '';

                // added slashes screw with quote grouping when done early, so done later
                $q['s'] = stripslashes( $q['s'] );
                if ( empty( $_GET['s'] ) && $this->is_main_query() )
                        $q['s'] = urldecode( $q['s'] );
                // there are no line breaks in <input /> fields
                $q['s'] = str_replace( array( "\r", "\n" ), '', $q['s'] );
                $q['search_terms_count'] = 1;
                if ( ! empty( $q['sentence'] ) ) {
                        $q['search_terms'] = array( $q['s'] );
                } else {
                        if ( preg_match_all( '/".*?("|$)|((?<=[\t ",+])|^)[^\t ",+]+/', $q['s'], $matches ) ) {
                                $q['search_terms_count'] = count( $matches[0] );
                                $q['search_terms'] = $this->parse_search_terms( $matches[0] );
                                // if the search string has only short terms or stopwords, or is 10+ terms long, match it as sentence
                                if ( empty( $q['search_terms'] ) || count( $q['search_terms'] ) > 9 )
                                        $q['search_terms'] = array( $q['s'] );
                        } else {
                                $q['search_terms'] = array( $q['s'] );
                        }
                }

                $n = ! empty( $q['exact'] ) ? '' : '%';
                $searchand = '';
                $q['search_orderby_title'] = array();
                foreach ( $q['search_terms'] as $term ) {
                        // Terms prefixed with '-' should be excluded.
                        $include = '-' !== substr( $term, 0, 1 );
                        if ( $include ) {
                                $like_op  = 'LIKE';
                                $andor_op = 'OR';
                        } else {
                                $like_op  = 'NOT LIKE';
                                $andor_op = 'AND';
                                $term     = substr( $term, 1 );
                        }

                        if ( $n && $include ) {
                                $like = '%' . $wpdb->esc_like( $term ) . '%';
                                $q['search_orderby_title'][] = $wpdb->prepare( "$wpdb->posts.post_title LIKE %s", $like );
                        }

                        $like = $n . $wpdb->esc_like( $term ) . $n;
                        $search .= $wpdb->prepare( "{$searchand}(($wpdb->posts.post_title $like_op %s) $andor_op ($wpdb->posts.post_excerpt $like_op %s) $andor_op ($wpdb->posts.post_content $like_op %s))", $like, $like, $like );
                        $searchand = ' AND ';
                }

                if ( ! empty( $search ) ) {
                        $search = " AND ({$search}) ";
                        if ( ! is_user_logged_in() )
                                $search .= " AND ($wpdb->posts.post_password = '') ";
                }

                return $search;
        }

        /**
         * Check if the terms are suitable for searching.
         *
         * Uses an array of stopwords (terms) that are excluded from the separate
         * term matching when searching for posts. The list of English stopwords is
         * the approximate search engines list, and is translatable.
         *
         * @since 3.7.0
         *
         * @param array $terms Terms to check.
         * @return array Terms that are not stopwords.
         */
        protected function parse_search_terms( $terms ) {
                $strtolower = function_exists( 'mb_strtolower' ) ? 'mb_strtolower' : 'strtolower';
                $checked = array();

                $stopwords = $this->get_search_stopwords();

                foreach ( $terms as $term ) {
                        // keep before/after spaces when term is for exact match
                        if ( preg_match( '/^".+"$/', $term ) )
                                $term = trim( $term, "\"'" );
                        else
                                $term = trim( $term, "\"' " );

                        // Avoid single A-Z and single dashes.
                        if ( ! $term || ( 1 === strlen( $term ) && preg_match( '/^[a-z\-]$/i', $term ) ) )
                                continue;

                        if ( in_array( call_user_func( $strtolower, $term ), $stopwords, true ) )
                                continue;

                        $checked[] = $term;
                }

                return $checked;
        }

        /**
         * Retrieve stopwords used when parsing search terms.
         *
         * @since 3.7.0
         *
         * @return array Stopwords.
         */
        protected function get_search_stopwords() {
                if ( isset( $this->stopwords ) )
                        return $this->stopwords;

                /* translators: This is a comma-separated list of very common words that should be excluded from a search,
                 * like a, an, and the. These are usually called "stopwords". You should not simply translate these individual
                 * words into your language. Instead, look for and provide commonly accepted stopwords in your language.
                 */
                $words = explode( ',', _x( 'about,an,are,as,at,be,by,com,for,from,how,in,is,it,of,on,or,that,the,this,to,was,what,when,where,who,will,with,www',
                        'Comma-separated list of search stopwords in your language' ) );

                $stopwords = array();
                foreach ( $words as $word ) {
                        $word = trim( $word, "\r\n\t " );
                        if ( $word )
                                $stopwords[] = $word;
                }

                /**
                 * Filter stopwords used when parsing search terms.
                 *
                 * @since 3.7.0
                 *
                 * @param array $stopwords Stopwords.
                 */
                $this->stopwords = apply_filters( 'wp_search_stopwords', $stopwords );
                return $this->stopwords;
        }

        /**
         * Generate SQL for the ORDER BY condition based on passed search terms.
         *
         * @global wpdb $wpdb WordPress database abstraction object.
         *
         * @param array $q Query variables.
         * @return string ORDER BY clause.
         */
        protected function parse_search_order( &$q ) {
                global $wpdb;

                if ( $q['search_terms_count'] > 1 ) {
                        $num_terms = count( $q['search_orderby_title'] );

                        // If the search terms contain negative queries, don't bother ordering by sentence matches.
                        $like = '';
                        if ( ! preg_match( '/(?:\s|^)\-/', $q['s'] ) ) {
                                $like = '%' . $wpdb->esc_like( $q['s'] ) . '%';
                        }

                        $search_orderby = '';

                        // sentence match in 'post_title'
                        if ( $like ) {
                                $search_orderby .= $wpdb->prepare( "WHEN $wpdb->posts.post_title LIKE %s THEN 1 ", $like );
                        }

                        // sanity limit, sort as sentence when more than 6 terms
                        // (few searches are longer than 6 terms and most titles are not)
                        if ( $num_terms < 7 ) {
                                // all words in title
                                $search_orderby .= 'WHEN ' . implode( ' AND ', $q['search_orderby_title'] ) . ' THEN 2 ';
                                // any word in title, not needed when $num_terms == 1
                                if ( $num_terms > 1 )
                                        $search_orderby .= 'WHEN ' . implode( ' OR ', $q['search_orderby_title'] ) . ' THEN 3 ';
                        }

                        // Sentence match in 'post_content' and 'post_excerpt'.
                        if ( $like ) {
                                $search_orderby .= $wpdb->prepare( "WHEN $wpdb->posts.post_excerpt LIKE %s THEN 4 ", $like );
                                $search_orderby .= $wpdb->prepare( "WHEN $wpdb->posts.post_content LIKE %s THEN 5 ", $like );
                        }

                        if ( $search_orderby ) {
                                $search_orderby = '(CASE ' . $search_orderby . 'ELSE 6 END)';
                        }
                } else {
                        // single word or sentence search
                        $search_orderby = reset( $q['search_orderby_title'] ) . ' DESC';
                }

                return $search_orderby;
        }

        /**
         * If the passed orderby value is allowed, convert the alias to a
         * properly-prefixed orderby value.
         *
         * @since 4.0.0
         * @access protected
         *
         * @global wpdb $wpdb WordPress database abstraction object.
         *
         * @param string $orderby Alias for the field to order by.
         * @return string|false Table-prefixed value to used in the ORDER clause. False otherwise.
         */
        protected function parse_orderby( $orderby ) {
                global $wpdb;

                // Used to filter values.
                $allowed_keys = array(
                        'post_name', 'post_author', 'post_date', 'post_title', 'post_modified',
                        'post_parent', 'post_type', 'name', 'author', 'date', 'title', 'modified',
                        'parent', 'type', 'ID', 'menu_order', 'comment_count', 'rand',
                );

                $primary_meta_key = '';
                $primary_meta_query = false;
                $meta_clauses = $this->meta_query->get_clauses();
                if ( ! empty( $meta_clauses ) ) {
                        $primary_meta_query = reset( $meta_clauses );

                        if ( ! empty( $primary_meta_query['key'] ) ) {
                                $primary_meta_key = $primary_meta_query['key'];
                                $allowed_keys[] = $primary_meta_key;
                        }

                        $allowed_keys[] = 'meta_value';
                        $allowed_keys[] = 'meta_value_num';
                        $allowed_keys   = array_merge( $allowed_keys, array_keys( $meta_clauses ) );
                }

                // If RAND() contains a seed value, sanitize and add to allowed keys.
                $rand_with_seed = false;
                if ( preg_match( '/RAND\(([0-9]+)\)/i', $orderby, $matches ) ) {
                        $orderby = sprintf( 'RAND(%s)', intval( $matches[1] ) );
                        $allowed_keys[] = $orderby;
                        $rand_with_seed = true;
                }

                if ( ! in_array( $orderby, $allowed_keys, true ) ) {
                        return false;
                }

                switch ( $orderby ) {
                        case 'post_name':
                        case 'post_author':
                        case 'post_date':
                        case 'post_title':
                        case 'post_modified':
                        case 'post_parent':
                        case 'post_type':
                        case 'ID':
                        case 'menu_order':
                        case 'comment_count':
                                $orderby_clause = "$wpdb->posts.{$orderby}";
                                break;
                        case 'rand':
                                $orderby_clause = 'RAND()';
                                break;
                        case $primary_meta_key:
                        case 'meta_value':
                                if ( ! empty( $primary_meta_query['type'] ) ) {
                                        $orderby_clause = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
                                } else {
                                        $orderby_clause = "{$primary_meta_query['alias']}.meta_value";
                                }
                                break;
                        case 'meta_value_num':
                                $orderby_clause = "{$primary_meta_query['alias']}.meta_value+0";
                                break;
                        default:
                                if ( array_key_exists( $orderby, $meta_clauses ) ) {
                                        // $orderby corresponds to a meta_query clause.
                                        $meta_clause = $meta_clauses[ $orderby ];
                                        $orderby_clause = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
                                } elseif ( $rand_with_seed ) {
                                        $orderby_clause = $orderby;
                                } else {
                                        // Default: order by post field.
                                        $orderby_clause = "$wpdb->posts.post_" . sanitize_key( $orderby );
                                }

                                break;
                }

                return $orderby_clause;
        }

        /**
         * Parse an 'order' query variable and cast it to ASC or DESC as necessary.
         *
         * @since 4.0.0
         * @access protected
         *
         * @param string $order The 'order' query variable.
         * @return string The sanitized 'order' query variable.
         */
        protected function parse_order( $order ) {
                if ( ! is_string( $order ) || empty( $order ) ) {
                        return 'DESC';
                }

                if ( 'ASC' === strtoupper( $order ) ) {
                        return 'ASC';
                } else {
                        return 'DESC';
                }
        }

        /**
         * Sets the 404 property and saves whether query is feed.
         *
         * @since 2.0.0
         * @access public
         */
        public function set_404() {
                $is_feed = $this->is_feed;

                $this->init_query_flags();
                $this->is_404 = true;

                $this->is_feed = $is_feed;
        }

        /**
         * Retrieve query variable.
         *
         * @since 1.5.0
         * @since 3.9.0 The `$default` argument was introduced.
         *
         * @access public
         *
         * @param string $query_var Query variable key.
         * @param mixed  $default   Optional. Value to return if the query variable is not set. Default empty.
         * @return mixed Contents of the query variable.
         */
        public function get( $query_var, $default = '' ) {
                if ( isset( $this->query_vars[ $query_var ] ) ) {
                        return $this->query_vars[ $query_var ];
                }

                return $default;
        }

        /**
         * Set query variable.
         *
         * @since 1.5.0
         * @access public
         *
         * @param string $query_var Query variable key.
         * @param mixed  $value     Query variable value.
         */
        public function set($query_var, $value) {
                $this->query_vars[$query_var] = $value;
        }

        /**
         * Retrieve the posts based on query variables.
         *
         * There are a few filters and actions that can be used to modify the post
         * database query.
         *
         * @since 1.5.0
         * @access public
         *
         * @global wpdb $wpdb WordPress database abstraction object.
         *
         * @return array List of posts.
         */
        public function get_posts() {
                global $wpdb;

                $this->parse_query();

                /**
                 * Fires after the query variable object is created, but before the actual query is run.
                 *
                 * Note: If using conditional tags, use the method versions within the passed instance
                 * (e.g. $this->is_main_query() instead of is_main_query()). This is because the functions
                 * like is_main_query() test against the global $wp_query instance, not the passed one.
                 *
                 * @since 2.0.0
                 *
                 * @param WP_Query &$this The WP_Query instance (passed by reference).
                 */
                do_action_ref_array( 'pre_get_posts', array( &$this ) );

                // Shorthand.
                $q = &$this->query_vars;

                // Fill again in case pre_get_posts unset some vars.
                $q = $this->fill_query_vars($q);

                // Parse meta query
                $this->meta_query = new WP_Meta_Query();
                $this->meta_query->parse_query_vars( $q );

                // Set a flag if a pre_get_posts hook changed the query vars.
                $hash = md5( serialize( $this->query_vars ) );
                if ( $hash != $this->query_vars_hash ) {
                        $this->query_vars_changed = true;
                        $this->query_vars_hash = $hash;
                }
                unset($hash);

                // First let's clear some variables
                $distinct = '';
                $whichauthor = '';
                $whichmimetype = '';
                $where = '';
                $limits = '';
                $join = '';
                $search = '';
                $groupby = '';
                $post_status_join = false;
                $page = 1;

                if ( isset( $q['caller_get_posts'] ) ) {
                        _deprecated_argument( 'WP_Query', '3.1', __( '"caller_get_posts" is deprecated. Use "ignore_sticky_posts" instead.' ) );
                        if ( !isset( $q['ignore_sticky_posts'] ) )
                                $q['ignore_sticky_posts'] = $q['caller_get_posts'];
                }

                if ( !isset( $q['ignore_sticky_posts'] ) )
                        $q['ignore_sticky_posts'] = false;

                if ( !isset($q['suppress_filters']) )
                        $q['suppress_filters'] = false;

                if ( !isset($q['cache_results']) ) {
                        if ( wp_using_ext_object_cache() )
                                $q['cache_results'] = false;
                        else
                                $q['cache_results'] = true;
                }

                if ( !isset($q['update_post_term_cache']) )
                        $q['update_post_term_cache'] = true;

                if ( !isset($q['update_post_meta_cache']) )
                        $q['update_post_meta_cache'] = true;

                if ( !isset($q['post_type']) ) {
                        if ( $this->is_search )
                                $q['post_type'] = 'any';
                        else
                                $q['post_type'] = '';
                }
                $post_type = $q['post_type'];
                if ( empty( $q['posts_per_page'] ) ) {
                        $q['posts_per_page'] = get_option( 'posts_per_page' );
                }
                if ( isset($q['showposts']) && $q['showposts'] ) {
                        $q['showposts'] = (int) $q['showposts'];
                        $q['posts_per_page'] = $q['showposts'];
                }
                if ( (isset($q['posts_per_archive_page']) && $q['posts_per_archive_page'] != 0) && ($this->is_archive || $this->is_search) )
                        $q['posts_per_page'] = $q['posts_per_archive_page'];
                if ( !isset($q['nopaging']) ) {
                        if ( $q['posts_per_page'] == -1 ) {
                                $q['nopaging'] = true;
                        } else {
                                $q['nopaging'] = false;
                        }
                }

                if ( $this->is_feed ) {
                        // This overrides posts_per_page.
                        if ( ! empty( $q['posts_per_rss'] ) ) {
                                $q['posts_per_page'] = $q['posts_per_rss'];
                        } else {
                                $q['posts_per_page'] = get_option( 'posts_per_rss' );
                        }
                        $q['nopaging'] = false;
                }
                $q['posts_per_page'] = (int) $q['posts_per_page'];
                if ( $q['posts_per_page'] < -1 )
                        $q['posts_per_page'] = abs($q['posts_per_page']);
                elseif ( $q['posts_per_page'] == 0 )
                        $q['posts_per_page'] = 1;

                if ( !isset($q['comments_per_page']) || $q['comments_per_page'] == 0 )
                        $q['comments_per_page'] = get_option('comments_per_page');

                if ( $this->is_home && (empty($this->query) || $q['preview'] == 'true') && ( 'page' == get_option('show_on_front') ) && get_option('page_on_front') ) {
                        $this->is_page = true;
                        $this->is_home = false;
                        $q['page_id'] = get_option('page_on_front');
                }

                if ( isset($q['page']) ) {
                        $q['page'] = trim($q['page'], '/');
                        $q['page'] = absint($q['page']);
                }

                // If true, forcibly turns off SQL_CALC_FOUND_ROWS even when limits are present.
                if ( isset($q['no_found_rows']) )
                        $q['no_found_rows'] = (bool) $q['no_found_rows'];
                else
                        $q['no_found_rows'] = false;

                switch ( $q['fields'] ) {
                        case 'ids':
                                $fields = "$wpdb->posts.ID";
                                break;
                        case 'id=>parent':
                                $fields = "$wpdb->posts.ID, $wpdb->posts.post_parent";
                                break;
                        default:
                                $fields = "$wpdb->posts.*";
                }

                if ( '' !== $q['menu_order'] )
                        $where .= " AND $wpdb->posts.menu_order = " . $q['menu_order'];

                // The "m" parameter is meant for months but accepts datetimes of varying specificity
                if ( $q['m'] ) {
                        $where .= " AND YEAR($wpdb->posts.post_date)=" . substr($q['m'], 0, 4);
                        if ( strlen($q['m']) > 5 )
                                $where .= " AND MONTH($wpdb->posts.post_date)=" . substr($q['m'], 4, 2);
                        if ( strlen($q['m']) > 7 )
                                $where .= " AND DAYOFMONTH($wpdb->posts.post_date)=" . substr($q['m'], 6, 2);
                        if ( strlen($q['m']) > 9 )
                                $where .= " AND HOUR($wpdb->posts.post_date)=" . substr($q['m'], 8, 2);
                        if ( strlen($q['m']) > 11 )
                                $where .= " AND MINUTE($wpdb->posts.post_date)=" . substr($q['m'], 10, 2);
                        if ( strlen($q['m']) > 13 )
                                $where .= " AND SECOND($wpdb->posts.post_date)=" . substr($q['m'], 12, 2);
                }

                // Handle the other individual date parameters
                $date_parameters = array();

                if ( '' !== $q['hour'] )
                        $date_parameters['hour'] = $q['hour'];

                if ( '' !== $q['minute'] )
                        $date_parameters['minute'] = $q['minute'];

                if ( '' !== $q['second'] )
                        $date_parameters['second'] = $q['second'];

                if ( $q['year'] )
                        $date_parameters['year'] = $q['year'];

                if ( $q['monthnum'] )
                        $date_parameters['monthnum'] = $q['monthnum'];

                if ( $q['w'] )
                        $date_parameters['week'] = $q['w'];

                if ( $q['day'] )
                        $date_parameters['day'] = $q['day'];

                if ( $date_parameters ) {
                        $date_query = new WP_Date_Query( array( $date_parameters ) );
                        $where .= $date_query->get_sql();
                }
                unset( $date_parameters, $date_query );

                // Handle complex date queries
                if ( ! empty( $q['date_query'] ) ) {
                        $this->date_query = new WP_Date_Query( $q['date_query'] );
                        $where .= $this->date_query->get_sql();
                }


                // If we've got a post_type AND it's not "any" post_type.
                if ( !empty($q['post_type']) && 'any' != $q['post_type'] ) {
                        foreach ( (array)$q['post_type'] as $_post_type ) {
                                $ptype_obj = get_post_type_object($_post_type);
                                if ( !$ptype_obj || !$ptype_obj->query_var || empty($q[ $ptype_obj->query_var ]) )
                                        continue;

                                if ( ! $ptype_obj->hierarchical ) {
                                        // Non-hierarchical post types can directly use 'name'.
                                        $q['name'] = $q[ $ptype_obj->query_var ];
                                } else {
                                        // Hierarchical post types will operate through 'pagename'.
                                        $q['pagename'] = $q[ $ptype_obj->query_var ];
                                        $q['name'] = '';
                                }

                                // Only one request for a slug is possible, this is why name & pagename are overwritten above.
                                break;
                        } //end foreach
                        unset($ptype_obj);
                }

                if ( '' !== $q['title'] ) {
                        $where .= $wpdb->prepare( " AND $wpdb->posts.post_title = %s", stripslashes( $q['title'] ) );
                }

                // Parameters related to 'post_name'.
                if ( '' != $q['name'] ) {
                        $q['name'] = sanitize_title_for_query( $q['name'] );
                        $where .= " AND $wpdb->posts.post_name = '" . $q['name'] . "'";
                } elseif ( '' != $q['pagename'] ) {
                        if ( isset($this->queried_object_id) ) {
                                $reqpage = $this->queried_object_id;
                        } else {
                                if ( 'page' != $q['post_type'] ) {
                                        foreach ( (array)$q['post_type'] as $_post_type ) {
                                                $ptype_obj = get_post_type_object($_post_type);
                                                if ( !$ptype_obj || !$ptype_obj->hierarchical )
                                                        continue;

                                                $reqpage = get_page_by_path($q['pagename'], OBJECT, $_post_type);
                                                if ( $reqpage )
                                                        break;
                                        }
                                        unset($ptype_obj);
                                } else {
                                        $reqpage = get_page_by_path($q['pagename']);
                                }
                                if ( !empty($reqpage) )
                                        $reqpage = $reqpage->ID;
                                else
                                        $reqpage = 0;
                        }

                        $page_for_posts = get_option('page_for_posts');
                        if  ( ('page' != get_option('show_on_front') ) || empty($page_for_posts) || ( $reqpage != $page_for_posts ) ) {
                                $q['pagename'] = sanitize_title_for_query( wp_basename( $q['pagename'] ) );
                                $q['name'] = $q['pagename'];
                                $where .= " AND ($wpdb->posts.ID = '$reqpage')";
                                $reqpage_obj = get_post( $reqpage );
                                if ( is_object($reqpage_obj) && 'attachment' == $reqpage_obj->post_type ) {
                                        $this->is_attachment = true;
                                        $post_type = $q['post_type'] = 'attachment';
                                        $this->is_page = true;
                                        $q['attachment_id'] = $reqpage;
                                }
                        }
                } elseif ( '' != $q['attachment'] ) {
                        $q['attachment'] = sanitize_title_for_query( wp_basename( $q['attachment'] ) );
                        $q['name'] = $q['attachment'];
                        $where .= " AND $wpdb->posts.post_name = '" . $q['attachment'] . "'";
                } elseif ( is_array( $q['post_name__in'] ) && ! empty( $q['post_name__in'] ) ) {
                        $q['post_name__in'] = array_map( 'sanitize_title_for_query', $q['post_name__in'] );
                        $where .= " AND $wpdb->posts.post_name IN ('" . implode( "' ,'", $q['post_name__in'] ) . "')";
                }

                // If an attachment is requested by number, let it supersede any post number.
                if ( $q['attachment_id'] )
                        $q['p'] = absint($q['attachment_id']);

                // If a post number is specified, load that post
                if ( $q['p'] ) {
                        $where .= " AND {$wpdb->posts}.ID = " . $q['p'];
                } elseif ( $q['post__in'] ) {
                        $post__in = implode(',', array_map( 'absint', $q['post__in'] ));
                        $where .= " AND {$wpdb->posts}.ID IN ($post__in)";
                } elseif ( $q['post__not_in'] ) {
                        $post__not_in = implode(',',  array_map( 'absint', $q['post__not_in'] ));
                        $where .= " AND {$wpdb->posts}.ID NOT IN ($post__not_in)";
                }

                if ( is_numeric( $q['post_parent'] ) ) {
                        $where .= $wpdb->prepare( " AND $wpdb->posts.post_parent = %d ", $q['post_parent'] );
                } elseif ( $q['post_parent__in'] ) {
                        $post_parent__in = implode( ',', array_map( 'absint', $q['post_parent__in'] ) );
                        $where .= " AND {$wpdb->posts}.post_parent IN ($post_parent__in)";
                } elseif ( $q['post_parent__not_in'] ) {
                        $post_parent__not_in = implode( ',',  array_map( 'absint', $q['post_parent__not_in'] ) );
                        $where .= " AND {$wpdb->posts}.post_parent NOT IN ($post_parent__not_in)";
                }

                if ( $q['page_id'] ) {
                        if  ( ('page' != get_option('show_on_front') ) || ( $q['page_id'] != get_option('page_for_posts') ) ) {
                                $q['p'] = $q['page_id'];
                                $where = " AND {$wpdb->posts}.ID = " . $q['page_id'];
                        }
                }

                // If a search pattern is specified, load the posts that match.
                if ( strlen( $q['s'] ) ) {
                        $search = $this->parse_search( $q );
                }

                if ( ! $q['suppress_filters'] ) {
                        /**
                         * Filter the search SQL that is used in the WHERE clause of WP_Query.
                         *
                         * @since 3.0.0
                         *
                         * @param string   $search Search SQL for WHERE clause.
                         * @param WP_Query $this   The current WP_Query object.
                         */
                        $search = apply_filters_ref_array( 'posts_search', array( $search, &$this ) );
                }

                // Taxonomies
                if ( !$this->is_singular ) {
                        $this->parse_tax_query( $q );

                        $clauses = $this->tax_query->get_sql( $wpdb->posts, 'ID' );

                        $join .= $clauses['join'];
                        $where .= $clauses['where'];
                }

                if ( $this->is_tax ) {
                        if ( empty($post_type) ) {
                                // Do a fully inclusive search for currently registered post types of queried taxonomies
                                $post_type = array();
                                $taxonomies = array_keys( $this->tax_query->queried_terms );
                                foreach ( get_post_types( array( 'exclude_from_search' => false ) ) as $pt ) {
                                        $object_taxonomies = $pt === 'attachment' ? get_taxonomies_for_attachments() : get_object_taxonomies( $pt );
                                        if ( array_intersect( $taxonomies, $object_taxonomies ) )
                                                $post_type[] = $pt;
                                }
                                if ( ! $post_type )
                                        $post_type = 'any';
                                elseif ( count( $post_type ) == 1 )
                                        $post_type = $post_type[0];

                                $post_status_join = true;
                        } elseif ( in_array('attachment', (array) $post_type) ) {
                                $post_status_join = true;
                        }
                }

                /*
                 * Ensure that 'taxonomy', 'term', 'term_id', 'cat', and
                 * 'category_name' vars are set for backward compatibility.
                 */
                if ( ! empty( $this->tax_query->queried_terms ) ) {

                        /*
                         * Set 'taxonomy', 'term', and 'term_id' to the
                         * first taxonomy other than 'post_tag' or 'category'.
                         */
                        if ( ! isset( $q['taxonomy'] ) ) {
                                foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
                                        if ( empty( $queried_items['terms'][0] ) ) {
                                                continue;
                                        }

                                        if ( ! in_array( $queried_taxonomy, array( 'category', 'post_tag' ) ) ) {
                                                $q['taxonomy'] = $queried_taxonomy;

                                                if ( 'slug' === $queried_items['field'] ) {
                                                        $q['term'] = $queried_items['terms'][0];
                                                } else {
                                                        $q['term_id'] = $queried_items['terms'][0];
                                                }

                                                // Take the first one we find.
                                                break;
                                        }
                                }
                        }

                        // 'cat', 'category_name', 'tag_id'
                        foreach ( $this->tax_query->queried_terms as $queried_taxonomy => $queried_items ) {
                                if ( empty( $queried_items['terms'][0] ) ) {
                                        continue;
                                }

                                if ( 'category' === $queried_taxonomy ) {
                                        $the_cat = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'category' );
                                        if ( $the_cat ) {
                                                $this->set( 'cat', $the_cat->term_id );
                                                $this->set( 'category_name', $the_cat->slug );
                                        }
                                        unset( $the_cat );
                                }

                                if ( 'post_tag' === $queried_taxonomy ) {
                                        $the_tag = get_term_by( $queried_items['field'], $queried_items['terms'][0], 'post_tag' );
                                        if ( $the_tag ) {
                                                $this->set( 'tag_id', $the_tag->term_id );
                                        }
                                        unset( $the_tag );
                                }
                        }
                }

                if ( !empty( $this->tax_query->queries ) || !empty( $this->meta_query->queries ) ) {
                        $groupby = "{$wpdb->posts}.ID";
                }

                // Author/user stuff

                if ( ! empty( $q['author'] ) && $q['author'] != '0' ) {
                        $q['author'] = addslashes_gpc( '' . urldecode( $q['author'] ) );
                        $authors = array_unique( array_map( 'intval', preg_split( '/[,\s]+/', $q['author'] ) ) );
                        foreach ( $authors as $author ) {
                                $key = $author > 0 ? 'author__in' : 'author__not_in';
                                $q[$key][] = abs( $author );
                        }
                        $q['author'] = implode( ',', $authors );
                }

                if ( ! empty( $q['author__not_in'] ) ) {
                        $author__not_in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__not_in'] ) ) );
                        $where .= " AND {$wpdb->posts}.post_author NOT IN ($author__not_in) ";
                } elseif ( ! empty( $q['author__in'] ) ) {
                        $author__in = implode( ',', array_map( 'absint', array_unique( (array) $q['author__in'] ) ) );
                        $where .= " AND {$wpdb->posts}.post_author IN ($author__in) ";
                }

                // Author stuff for nice URLs

                if ( '' != $q['author_name'] ) {
                        if ( strpos($q['author_name'], '/') !== false ) {
                                $q['author_name'] = explode('/', $q['author_name']);
                                if ( $q['author_name'][ count($q['author_name'])-1 ] ) {
                                        $q['author_name'] = $q['author_name'][count($q['author_name'])-1]; // no trailing slash
                                } else {
                                        $q['author_name'] = $q['author_name'][count($q['author_name'])-2]; // there was a trailing slash
                                }
                        }
                        $q['author_name'] = sanitize_title_for_query( $q['author_name'] );
                        $q['author'] = get_user_by('slug', $q['author_name']);
                        if ( $q['author'] )
                                $q['author'] = $q['author']->ID;
                        $whichauthor .= " AND ($wpdb->posts.post_author = " . absint($q['author']) . ')';
                }

                // MIME-Type stuff for attachment browsing

                if ( isset( $q['post_mime_type'] ) && '' != $q['post_mime_type'] )
                        $whichmimetype = wp_post_mime_type_where( $q['post_mime_type'], $wpdb->posts );

                $where .= $search . $whichauthor . $whichmimetype;

                if ( ! empty( $this->meta_query->queries ) ) {
                        $clauses = $this->meta_query->get_sql( 'post', $wpdb->posts, 'ID', $this );
                        $join   .= $clauses['join'];
                        $where  .= $clauses['where'];
                }

                $rand = ( isset( $q['orderby'] ) && 'rand' === $q['orderby'] );
                if ( ! isset( $q['order'] ) ) {
                        $q['order'] = $rand ? '' : 'DESC';
                } else {
                        $q['order'] = $rand ? '' : $this->parse_order( $q['order'] );
                }

                // Order by.
                if ( empty( $q['orderby'] ) ) {
                        /*
                         * Boolean false or empty array blanks out ORDER BY,
                         * while leaving the value unset or otherwise empty sets the default.
                         */
                        if ( isset( $q['orderby'] ) && ( is_array( $q['orderby'] ) || false === $q['orderby'] ) ) {
                                $orderby = '';
                        } else {
                                $orderby = "$wpdb->posts.post_date " . $q['order'];
                        }
                } elseif ( 'none' == $q['orderby'] ) {
                        $orderby = '';
                } elseif ( $q['orderby'] == 'post__in' && ! empty( $post__in ) ) {
                        $orderby = "FIELD( {$wpdb->posts}.ID, $post__in )";
                } elseif ( $q['orderby'] == 'post_parent__in' && ! empty( $post_parent__in ) ) {
                        $orderby = "FIELD( {$wpdb->posts}.post_parent, $post_parent__in )";
                } else {
                        $orderby_array = array();
                        if ( is_array( $q['orderby'] ) ) {
                                foreach ( $q['orderby'] as $_orderby => $order ) {
                                        $orderby = addslashes_gpc( urldecode( $_orderby ) );
                                        $parsed  = $this->parse_orderby( $orderby );

                                        if ( ! $parsed ) {
                                                continue;
                                        }

                                        $orderby_array[] = $parsed . ' ' . $this->parse_order( $order );
                                }
                                $orderby = implode( ', ', $orderby_array );

                        } else {
                                $q['orderby'] = urldecode( $q['orderby'] );
                                $q['orderby'] = addslashes_gpc( $q['orderby'] );

                                foreach ( explode( ' ', $q['orderby'] ) as $i => $orderby ) {
                                        $parsed = $this->parse_orderby( $orderby );
                                        // Only allow certain values for safety.
                                        if ( ! $parsed ) {
                                                continue;
                                        }

                                        $orderby_array[] = $parsed;
                                }
                                $orderby = implode( ' ' . $q['order'] . ', ', $orderby_array );

                                if ( empty( $orderby ) ) {
                                        $orderby = "$wpdb->posts.post_date " . $q['order'];
                                } elseif ( ! empty( $q['order'] ) ) {
                                        $orderby .= " {$q['order']}";
                                }
                        }
                }

                // Order search results by relevance only when another "orderby" is not specified in the query.
                if ( ! empty( $q['s'] ) ) {
                        $search_orderby = '';
                        if ( ! empty( $q['search_orderby_title'] ) && ( empty( $q['orderby'] ) && ! $this->is_feed ) || ( isset( $q['orderby'] ) && 'relevance' === $q['orderby'] ) )
                                $search_orderby = $this->parse_search_order( $q );

                        if ( ! $q['suppress_filters'] ) {
                                /**
                                 * Filter the ORDER BY used when ordering search results.
                                 *
                                 * @since 3.7.0
                                 *
                                 * @param string   $search_orderby The ORDER BY clause.
                                 * @param WP_Query $this           The current WP_Query instance.
                                 */
                                $search_orderby = apply_filters( 'posts_search_orderby', $search_orderby, $this );
                        }

                        if ( $search_orderby )
                                $orderby = $orderby ? $search_orderby . ', ' . $orderby : $search_orderby;
                }

                if ( is_array( $post_type ) && count( $post_type ) > 1 ) {
                        $post_type_cap = 'multiple_post_type';
                } else {
                        if ( is_array( $post_type ) )
                                $post_type = reset( $post_type );
                        $post_type_object = get_post_type_object( $post_type );
                        if ( empty( $post_type_object ) )
                                $post_type_cap = $post_type;
                }

                if ( isset( $q['post_password'] ) ) {
                        $where .= $wpdb->prepare( " AND $wpdb->posts.post_password = %s", $q['post_password'] );
                        if ( empty( $q['perm'] ) ) {
                                $q['perm'] = 'readable';
                        }
                } elseif ( isset( $q['has_password'] ) ) {
                        $where .= sprintf( " AND $wpdb->posts.post_password %s ''", $q['has_password'] ? '!=' : '=' );
                }

                if ( ! empty( $q['comment_status'] ) ) {
                        $where .= $wpdb->prepare( " AND $wpdb->posts.comment_status = %s ", $q['comment_status'] );
                }

                if ( ! empty( $q['ping_status'] ) )  {
                        $where .= $wpdb->prepare( " AND $wpdb->posts.ping_status = %s ", $q['ping_status'] );
                }

                if ( 'any' == $post_type ) {
                        $in_search_post_types = get_post_types( array('exclude_from_search' => false) );
                        if ( empty( $in_search_post_types ) )
                                $where .= ' AND 1=0 ';
                        else
                                $where .= " AND $wpdb->posts.post_type IN ('" . join("', '", $in_search_post_types ) . "')";
                } elseif ( !empty( $post_type ) && is_array( $post_type ) ) {
                        $where .= " AND $wpdb->posts.post_type IN ('" . join("', '", $post_type) . "')";
                } elseif ( ! empty( $post_type ) ) {
                        $where .= " AND $wpdb->posts.post_type = '$post_type'";
                        $post_type_object = get_post_type_object ( $post_type );
                } elseif ( $this->is_attachment ) {
                        $where .= " AND $wpdb->posts.post_type = 'attachment'";
                        $post_type_object = get_post_type_object ( 'attachment' );
                } elseif ( $this->is_page ) {
                        $where .= " AND $wpdb->posts.post_type = 'page'";
                        $post_type_object = get_post_type_object ( 'page' );
                } else {
                        $where .= " AND $wpdb->posts.post_type = 'post'";
                        $post_type_object = get_post_type_object ( 'post' );
                }

                $edit_cap = 'edit_post';
                $read_cap = 'read_post';

                if ( ! empty( $post_type_object ) ) {
                        $edit_others_cap = $post_type_object->cap->edit_others_posts;
                        $read_private_cap = $post_type_object->cap->read_private_posts;
                } else {
                        $edit_others_cap = 'edit_others_' . $post_type_cap . 's';
                        $read_private_cap = 'read_private_' . $post_type_cap . 's';
                }

                $user_id = get_current_user_id();

                $q_status = array();
                if ( ! empty( $q['post_status'] ) ) {
                        $statuswheres = array();
                        $q_status = $q['post_status'];
                        if ( ! is_array( $q_status ) )
                                $q_status = explode(',', $q_status);
                        $r_status = array();
                        $p_status = array();
                        $e_status = array();
                        if ( in_array( 'any', $q_status ) ) {
                                foreach ( get_post_stati( array( 'exclude_from_search' => true ) ) as $status ) {
                                        if ( ! in_array( $status, $q_status ) ) {
                                                $e_status[] = "$wpdb->posts.post_status <> '$status'";
                                        }
                                }
                        } else {
                                foreach ( get_post_stati() as $status ) {
                                        if ( in_array( $status, $q_status ) ) {
                                                if ( 'private' == $status )
                                                        $p_status[] = "$wpdb->posts.post_status = '$status'";
                                                else
                                                        $r_status[] = "$wpdb->posts.post_status = '$status'";
                                        }
                                }
                        }

                        if ( empty($q['perm'] ) || 'readable' != $q['perm'] ) {
                                $r_status = array_merge($r_status, $p_status);
                                unset($p_status);
                        }

                        if ( !empty($e_status) ) {
                                $statuswheres[] = "(" . join( ' AND ', $e_status ) . ")";
                        }
                        if ( !empty($r_status) ) {
                                if ( !empty($q['perm'] ) && 'editable' == $q['perm'] && !current_user_can($edit_others_cap) )
                                        $statuswheres[] = "($wpdb->posts.post_author = $user_id " . "AND (" . join( ' OR ', $r_status ) . "))";
                                else
                                        $statuswheres[] = "(" . join( ' OR ', $r_status ) . ")";
                        }
                        if ( !empty($p_status) ) {
                                if ( !empty($q['perm'] ) && 'readable' == $q['perm'] && !current_user_can($read_private_cap) )
                                        $statuswheres[] = "($wpdb->posts.post_author = $user_id " . "AND (" . join( ' OR ', $p_status ) . "))";
                                else
                                        $statuswheres[] = "(" . join( ' OR ', $p_status ) . ")";
                        }
                        if ( $post_status_join ) {
                                $join .= " LEFT JOIN $wpdb->posts AS p2 ON ($wpdb->posts.post_parent = p2.ID) ";
                                foreach ( $statuswheres as $index => $statuswhere )
                                        $statuswheres[$index] = "($statuswhere OR ($wpdb->posts.post_status = 'inherit' AND " . str_replace($wpdb->posts, 'p2', $statuswhere) . "))";
                        }
                        $where_status = implode( ' OR ', $statuswheres );
                        if ( ! empty( $where_status ) ) {
                                $where .= " AND ($where_status)";
                        }
                } elseif ( !$this->is_singular ) {
                        $where .= " AND ($wpdb->posts.post_status = 'publish'";

                        // Add public states.
                        $public_states = get_post_stati( array('public' => true) );
                        foreach ( (array) $public_states as $state ) {
                                if ( 'publish' == $state ) // Publish is hard-coded above.
                                        continue;
                                $where .= " OR $wpdb->posts.post_status = '$state'";
                        }

                        if ( $this->is_admin ) {
                                // Add protected states that should show in the admin all list.
                                $admin_all_states = get_post_stati( array('protected' => true, 'show_in_admin_all_list' => true) );
                                foreach ( (array) $admin_all_states as $state )
                                        $where .= " OR $wpdb->posts.post_status = '$state'";
                        }

                        if ( is_user_logged_in() ) {
                                // Add private states that are limited to viewing by the author of a post or someone who has caps to read private states.
                                $private_states = get_post_stati( array('private' => true) );
                                foreach ( (array) $private_states as $state )
                                        $where .= current_user_can( $read_private_cap ) ? " OR $wpdb->posts.post_status = '$state'" : " OR $wpdb->posts.post_author = $user_id AND $wpdb->posts.post_status = '$state'";
                        }

                        $where .= ')';
                }

                /*
                 * Apply filters on where and join prior to paging so that any
                 * manipulations to them are reflected in the paging by day queries.
                 */
                if ( !$q['suppress_filters'] ) {
                        /**
                         * Filter the WHERE clause of the query.
                         *
                         * @since 1.5.0
                         *
                         * @param string   $where The WHERE clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $where = apply_filters_ref_array( 'posts_where', array( $where, &$this ) );

                        /**
                         * Filter the JOIN clause of the query.
                         *
                         * @since 1.5.0
                         *
                         * @param string   $where The JOIN clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $join = apply_filters_ref_array( 'posts_join', array( $join, &$this ) );
                }

                // Paging
                if ( empty($q['nopaging']) && !$this->is_singular ) {
                        $page = absint($q['paged']);
                        if ( !$page )
                                $page = 1;

                        // If 'offset' is provided, it takes precedence over 'paged'.
                        if ( isset( $q['offset'] ) && is_numeric( $q['offset'] ) ) {
                                $q['offset'] = absint( $q['offset'] );
                                $pgstrt = $q['offset'] . ', ';
                        } else {
                                $pgstrt = absint( ( $page - 1 ) * $q['posts_per_page'] ) . ', ';
                        }
                        $limits = 'LIMIT ' . $pgstrt . $q['posts_per_page'];
                }

                // Comments feeds
                if ( $this->is_comment_feed && ! $this->is_singular ) {
                        if ( $this->is_archive || $this->is_search ) {
                                $cjoin = "JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) $join ";
                                $cwhere = "WHERE comment_approved = '1' $where";
                                $cgroupby = "$wpdb->comments.comment_id";
                        } else { // Other non singular e.g. front
                                $cjoin = "JOIN $wpdb->posts ON ( $wpdb->comments.comment_post_ID = $wpdb->posts.ID )";
                                $cwhere = "WHERE ( post_status = 'publish' OR ( post_status = 'inherit' && post_type = 'attachment' ) ) AND comment_approved = '1'";
                                $cgroupby = '';
                        }

                        if ( !$q['suppress_filters'] ) {
                                /**
                                 * Filter the JOIN clause of the comments feed query before sending.
                                 *
                                 * @since 2.2.0
                                 *
                                 * @param string   $cjoin The JOIN clause of the query.
                                 * @param WP_Query &$this The WP_Query instance (passed by reference).
                                 */
                                $cjoin = apply_filters_ref_array( 'comment_feed_join', array( $cjoin, &$this ) );

                                /**
                                 * Filter the WHERE clause of the comments feed query before sending.
                                 *
                                 * @since 2.2.0
                                 *
                                 * @param string   $cwhere The WHERE clause of the query.
                                 * @param WP_Query &$this  The WP_Query instance (passed by reference).
                                 */
                                $cwhere = apply_filters_ref_array( 'comment_feed_where', array( $cwhere, &$this ) );

                                /**
                                 * Filter the GROUP BY clause of the comments feed query before sending.
                                 *
                                 * @since 2.2.0
                                 *
                                 * @param string   $cgroupby The GROUP BY clause of the query.
                                 * @param WP_Query &$this    The WP_Query instance (passed by reference).
                                 */
                                $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( $cgroupby, &$this ) );

                                /**
                                 * Filter the ORDER BY clause of the comments feed query before sending.
                                 *
                                 * @since 2.8.0
                                 *
                                 * @param string   $corderby The ORDER BY clause of the query.
                                 * @param WP_Query &$this    The WP_Query instance (passed by reference).
                                 */
                                $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );

                                /**
                                 * Filter the LIMIT clause of the comments feed query before sending.
                                 *
                                 * @since 2.8.0
                                 *
                                 * @param string   $climits The JOIN clause of the query.
                                 * @param WP_Query &$this   The WP_Query instance (passed by reference).
                                 */
                                $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option('posts_per_rss'), &$this ) );
                        }
                        $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
                        $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';

                        $comments = (array) $wpdb->get_results("SELECT $distinct $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits");
                        // Convert to WP_Comment
                        $this->comments = array_map( 'get_comment', $comments );
                        $this->comment_count = count($this->comments);

                        $post_ids = array();

                        foreach ( $this->comments as $comment )
                                $post_ids[] = (int) $comment->comment_post_ID;

                        $post_ids = join(',', $post_ids);
                        $join = '';
                        if ( $post_ids )
                                $where = "AND $wpdb->posts.ID IN ($post_ids) ";
                        else
                                $where = "AND 0";
                }

                $pieces = array( 'where', 'groupby', 'join', 'orderby', 'distinct', 'fields', 'limits' );

                /*
                 * Apply post-paging filters on where and join. Only plugins that
                 * manipulate paging queries should use these hooks.
                 */
                if ( !$q['suppress_filters'] ) {
                        /**
                         * Filter the WHERE clause of the query.
                         *
                         * Specifically for manipulating paging queries.
                         *
                         * @since 1.5.0
                         *
                         * @param string   $where The WHERE clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $where = apply_filters_ref_array( 'posts_where_paged', array( $where, &$this ) );

                        /**
                         * Filter the GROUP BY clause of the query.
                         *
                         * @since 2.0.0
                         *
                         * @param string   $groupby The GROUP BY clause of the query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $groupby = apply_filters_ref_array( 'posts_groupby', array( $groupby, &$this ) );

                        /**
                         * Filter the JOIN clause of the query.
                         *
                         * Specifically for manipulating paging queries.
                         *
                         * @since 1.5.0
                         *
                         * @param string   $join  The JOIN clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $join = apply_filters_ref_array( 'posts_join_paged', array( $join, &$this ) );

                        /**
                         * Filter the ORDER BY clause of the query.
                         *
                         * @since 1.5.1
                         *
                         * @param string   $orderby The ORDER BY clause of the query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $orderby = apply_filters_ref_array( 'posts_orderby', array( $orderby, &$this ) );

                        /**
                         * Filter the DISTINCT clause of the query.
                         *
                         * @since 2.1.0
                         *
                         * @param string   $distinct The DISTINCT clause of the query.
                         * @param WP_Query &$this    The WP_Query instance (passed by reference).
                         */
                        $distinct = apply_filters_ref_array( 'posts_distinct', array( $distinct, &$this ) );

                        /**
                         * Filter the LIMIT clause of the query.
                         *
                         * @since 2.1.0
                         *
                         * @param string   $limits The LIMIT clause of the query.
                         * @param WP_Query &$this  The WP_Query instance (passed by reference).
                         */
                        $limits = apply_filters_ref_array( 'post_limits', array( $limits, &$this ) );

                        /**
                         * Filter the SELECT clause of the query.
                         *
                         * @since 2.1.0
                         *
                         * @param string   $fields The SELECT clause of the query.
                         * @param WP_Query &$this  The WP_Query instance (passed by reference).
                         */
                        $fields = apply_filters_ref_array( 'posts_fields', array( $fields, &$this ) );

                        /**
                         * Filter all query clauses at once, for convenience.
                         *
                         * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
                         * fields (SELECT), and LIMITS clauses.
                         *
                         * @since 3.1.0
                         *
                         * @param array    $clauses The list of clauses for the query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );

                        $where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
                        $groupby = isset( $clauses[ 'groupby' ] ) ? $clauses[ 'groupby' ] : '';
                        $join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
                        $orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
                        $distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : '';
                        $fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
                        $limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
                }

                /**
                 * Fires to announce the query's current selection parameters.
                 *
                 * For use by caching plugins.
                 *
                 * @since 2.3.0
                 *
                 * @param string $selection The assembled selection query.
                 */
                do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );

                /*
                 * Filter again for the benefit of caching plugins.
                 * Regular plugins should use the hooks above.
                 */
                if ( !$q['suppress_filters'] ) {
                        /**
                         * Filter the WHERE clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $where The WHERE clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $where = apply_filters_ref_array( 'posts_where_request', array( $where, &$this ) );

                        /**
                         * Filter the GROUP BY clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $groupby The GROUP BY clause of the query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $groupby = apply_filters_ref_array( 'posts_groupby_request', array( $groupby, &$this ) );

                        /**
                         * Filter the JOIN clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $join  The JOIN clause of the query.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $join = apply_filters_ref_array( 'posts_join_request', array( $join, &$this ) );

                        /**
                         * Filter the ORDER BY clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $orderby The ORDER BY clause of the query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $orderby = apply_filters_ref_array( 'posts_orderby_request', array( $orderby, &$this ) );

                        /**
                         * Filter the DISTINCT clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $distinct The DISTINCT clause of the query.
                         * @param WP_Query &$this    The WP_Query instance (passed by reference).
                         */
                        $distinct = apply_filters_ref_array( 'posts_distinct_request', array( $distinct, &$this ) );

                        /**
                         * Filter the SELECT clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $fields The SELECT clause of the query.
                         * @param WP_Query &$this  The WP_Query instance (passed by reference).
                         */
                        $fields = apply_filters_ref_array( 'posts_fields_request', array( $fields, &$this ) );

                        /**
                         * Filter the LIMIT clause of the query.
                         *
                         * For use by caching plugins.
                         *
                         * @since 2.5.0
                         *
                         * @param string   $limits The LIMIT clause of the query.
                         * @param WP_Query &$this  The WP_Query instance (passed by reference).
                         */
                        $limits = apply_filters_ref_array( 'post_limits_request', array( $limits, &$this ) );

                        /**
                         * Filter all query clauses at once, for convenience.
                         *
                         * For use by caching plugins.
                         *
                         * Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT,
                         * fields (SELECT), and LIMITS clauses.
                         *
                         * @since 3.1.0
                         *
                         * @param array    $pieces The pieces of the query.
                         * @param WP_Query &$this  The WP_Query instance (passed by reference).
                         */
                        $clauses = (array) apply_filters_ref_array( 'posts_clauses_request', array( compact( $pieces ), &$this ) );

                        $where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
                        $groupby = isset( $clauses[ 'groupby' ] ) ? $clauses[ 'groupby' ] : '';
                        $join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
                        $orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
                        $distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : '';
                        $fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
                        $limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
                }

                if ( ! empty($groupby) )
                        $groupby = 'GROUP BY ' . $groupby;
                if ( !empty( $orderby ) )
                        $orderby = 'ORDER BY ' . $orderby;

                $found_rows = '';
                if ( !$q['no_found_rows'] && !empty($limits) )
                        $found_rows = 'SQL_CALC_FOUND_ROWS';

                $this->request = $old_request = "SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";

                if ( !$q['suppress_filters'] ) {
                        /**
                         * Filter the completed SQL query before sending.
                         *
                         * @since 2.0.0
                         *
                         * @param array    $request The complete SQL query.
                         * @param WP_Query &$this   The WP_Query instance (passed by reference).
                         */
                        $this->request = apply_filters_ref_array( 'posts_request', array( $this->request, &$this ) );
                }

                if ( 'ids' == $q['fields'] ) {
                        $this->posts = $wpdb->get_col( $this->request );
                        $this->posts = array_map( 'intval', $this->posts );
                        $this->post_count = count( $this->posts );
                        $this->set_found_posts( $q, $limits );

                        return $this->posts;
                }

                if ( 'id=>parent' == $q['fields'] ) {
                        $this->posts = $wpdb->get_results( $this->request );
                        $this->post_count = count( $this->posts );
                        $this->set_found_posts( $q, $limits );

                        $r = array();
                        foreach ( $this->posts as $key => $post ) {
                                $this->posts[ $key ]->ID = (int) $post->ID;
                                $this->posts[ $key ]->post_parent = (int) $post->post_parent;

                                $r[ (int) $post->ID ] = (int) $post->post_parent;
                        }

                        return $r;
                }

                $split_the_query = ( $old_request == $this->request && "$wpdb->posts.*" == $fields && !empty( $limits ) && $q['posts_per_page'] < 500 );

                /**
                 * Filter whether to split the query.
                 *
                 * Splitting the query will cause it to fetch just the IDs of the found posts
                 * (and then individually fetch each post by ID), rather than fetching every
                 * complete row at once. One massive result vs. many small results.
                 *
                 * @since 3.4.0
                 *
                 * @param bool     $split_the_query Whether or not to split the query.
                 * @param WP_Query $this            The WP_Query instance.
                 */
                $split_the_query = apply_filters( 'split_the_query', $split_the_query, $this );

                if ( $split_the_query ) {
                        // First get the IDs and then fill in the objects

                        $this->request = "SELECT $found_rows $distinct $wpdb->posts.ID FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";

                        /**
                         * Filter the Post IDs SQL request before sending.
                         *
                         * @since 3.4.0
                         *
                         * @param string   $request The post ID request.
                         * @param WP_Query $this    The WP_Query instance.
                         */
                        $this->request = apply_filters( 'posts_request_ids', $this->request, $this );

                        $ids = $wpdb->get_col( $this->request );

                        if ( $ids ) {
                                $this->posts = $ids;
                                $this->set_found_posts( $q, $limits );
                                _prime_post_caches( $ids, $q['update_post_term_cache'], $q['update_post_meta_cache'] );
                        } else {
                                $this->posts = array();
                        }
                } else {
                        $this->posts = $wpdb->get_results( $this->request );
                        $this->set_found_posts( $q, $limits );
                }

                // Convert to WP_Post objects
                if ( $this->posts )
                        $this->posts = array_map( 'get_post', $this->posts );

                if ( ! $q['suppress_filters'] ) {
                        /**
                         * Filter the raw post results array, prior to status checks.
                         *
                         * @since 2.3.0
                         *
                         * @param array    $posts The post results array.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $this->posts = apply_filters_ref_array( 'posts_results', array( $this->posts, &$this ) );
                }

                if ( !empty($this->posts) && $this->is_comment_feed && $this->is_singular ) {
                        /** This filter is documented in wp-includes/query.php */
                        $cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );

                        /** This filter is documented in wp-includes/query.php */
                        $cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );

                        /** This filter is documented in wp-includes/query.php */
                        $cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) );
                        $cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';

                        /** This filter is documented in wp-includes/query.php */
                        $corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
                        $corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';

                        /** This filter is documented in wp-includes/query.php */
                        $climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option('posts_per_rss'), &$this ) );

                        $comments_request = "SELECT $wpdb->comments.* FROM $wpdb->comments $cjoin $cwhere $cgroupby $corderby $climits";
                        $comments = $wpdb->get_results($comments_request);
                        // Convert to WP_Comment
                        $this->comments = array_map( 'get_comment', $comments );
                        $this->comment_count = count($this->comments);
                }

                // Check post status to determine if post should be displayed.
                if ( !empty($this->posts) && ($this->is_single || $this->is_page) ) {
                        $status = get_post_status($this->posts[0]);
                        if ( 'attachment' === $this->posts[0]->post_type && 0 === (int) $this->posts[0]->post_parent ) {
                                $this->is_page = false;
                                $this->is_single = true;
                                $this->is_attachment = true;
                        }
                        $post_status_obj = get_post_status_object($status);

                        // If the post_status was specifically requested, let it pass through.
                        if ( !$post_status_obj->public && ! in_array( $status, $q_status ) ) {

                                if ( ! is_user_logged_in() ) {
                                        // User must be logged in to view unpublished posts.
                                        $this->posts = array();
                                } else {
                                        if  ( $post_status_obj->protected ) {
                                                // User must have edit permissions on the draft to preview.
                                                if ( ! current_user_can($edit_cap, $this->posts[0]->ID) ) {
                                                        $this->posts = array();
                                                } else {
                                                        $this->is_preview = true;
                                                        if ( 'future' != $status )
                                                                $this->posts[0]->post_date = current_time('mysql');
                                                }
                                        } elseif ( $post_status_obj->private ) {
                                                if ( ! current_user_can($read_cap, $this->posts[0]->ID) )
                                                        $this->posts = array();
                                        } else {
                                                $this->posts = array();
                                        }
                                }
                        }

                        if ( $this->is_preview && $this->posts && current_user_can( $edit_cap, $this->posts[0]->ID ) ) {
                                /**
                                 * Filter the single post for preview mode.
                                 *
                                 * @since 2.7.0
                                 *
                                 * @param WP_Post  $post_preview  The Post object.
                                 * @param WP_Query &$this         The WP_Query instance (passed by reference).
                                 */
                                $this->posts[0] = get_post( apply_filters_ref_array( 'the_preview', array( $this->posts[0], &$this ) ) );
                        }
                }

                // Put sticky posts at the top of the posts array
                $sticky_posts = get_option('sticky_posts');
                if ( $this->is_home && $page <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !$q['ignore_sticky_posts'] ) {
                        $num_posts = count($this->posts);
                        $sticky_offset = 0;
                        // Loop over posts and relocate stickies to the front.
                        for ( $i = 0; $i < $num_posts; $i++ ) {
                                if ( in_array($this->posts[$i]->ID, $sticky_posts) ) {
                                        $sticky_post = $this->posts[$i];
                                        // Remove sticky from current position
                                        array_splice($this->posts, $i, 1);
                                        // Move to front, after other stickies
                                        array_splice($this->posts, $sticky_offset, 0, array($sticky_post));
                                        // Increment the sticky offset. The next sticky will be placed at this offset.
                                        $sticky_offset++;
                                        // Remove post from sticky posts array
                                        $offset = array_search($sticky_post->ID, $sticky_posts);
                                        unset( $sticky_posts[$offset] );
                                }
                        }

                        // If any posts have been excluded specifically, Ignore those that are sticky.
                        if ( !empty($sticky_posts) && !empty($q['post__not_in']) )
                                $sticky_posts = array_diff($sticky_posts, $q['post__not_in']);

                        // Fetch sticky posts that weren't in the query results
                        if ( !empty($sticky_posts) ) {
                                $stickies = get_posts( array(
                                        'post__in' => $sticky_posts,
                                        'post_type' => $post_type,
                                        'post_status' => 'publish',
                                        'nopaging' => true
                                ) );

                                foreach ( $stickies as $sticky_post ) {
                                        array_splice( $this->posts, $sticky_offset, 0, array( $sticky_post ) );
                                        $sticky_offset++;
                                }
                        }
                }

                // If comments have been fetched as part of the query, make sure comment meta lazy-loading is set up.
                if ( ! empty( $this->comments ) ) {
                        wp_queue_comments_for_comment_meta_lazyload( $this->comments );
                }

                if ( ! $q['suppress_filters'] ) {
                        /**
                         * Filter the array of retrieved posts after they've been fetched and
                         * internally processed.
                         *
                         * @since 1.5.0
                         *
                         * @param array    $posts The array of retrieved posts.
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        $this->posts = apply_filters_ref_array( 'the_posts', array( $this->posts, &$this ) );
                }

                // Ensure that any posts added/modified via one of the filters above are
                // of the type WP_Post and are filtered.
                if ( $this->posts ) {
                        $this->post_count = count( $this->posts );

                        $this->posts = array_map( 'get_post', $this->posts );

                        if ( $q['cache_results'] )
                                update_post_caches($this->posts, $post_type, $q['update_post_term_cache'], $q['update_post_meta_cache']);

                        $this->post = reset( $this->posts );
                } else {
                        $this->post_count = 0;
                        $this->posts = array();
                }

                if ( $q['update_post_term_cache'] ) {
                        wp_queue_posts_for_term_meta_lazyload( $this->posts );
                }

                return $this->posts;
        }

        /**
         * Set up the amount of found posts and the number of pages (if limit clause was used)
         * for the current query.
         *
         * @since 3.5.0
         * @access private
         *
         * @global wpdb $wpdb WordPress database abstraction object.
         *
         * @param array  $q      Query variables.
         * @param string $limits LIMIT clauses of the query.
         */
        private function set_found_posts( $q, $limits ) {
                global $wpdb;

                // Bail if posts is an empty array. Continue if posts is an empty string,
                // null, or false to accommodate caching plugins that fill posts later.
                if ( $q['no_found_rows'] || ( is_array( $this->posts ) && ! $this->posts ) )
                        return;

                if ( ! empty( $limits ) ) {
                        /**
                         * Filter the query to run for retrieving the found posts.
                         *
                         * @since 2.1.0
                         *
                         * @param string   $found_posts The query to run to find the found posts.
                         * @param WP_Query &$this       The WP_Query instance (passed by reference).
                         */
                        $this->found_posts = $wpdb->get_var( apply_filters_ref_array( 'found_posts_query', array( 'SELECT FOUND_ROWS()', &$this ) ) );
                } else {
                        $this->found_posts = count( $this->posts );
                }

                /**
                 * Filter the number of found posts for the query.
                 *
                 * @since 2.1.0
                 *
                 * @param int      $found_posts The number of posts found.
                 * @param WP_Query &$this       The WP_Query instance (passed by reference).
                 */
                $this->found_posts = apply_filters_ref_array( 'found_posts', array( $this->found_posts, &$this ) );

                if ( ! empty( $limits ) )
                        $this->max_num_pages = ceil( $this->found_posts / $q['posts_per_page'] );
        }

        /**
         * Set up the next post and iterate current post index.
         *
         * @since 1.5.0
         * @access public
         *
         * @return WP_Post Next post.
         */
        public function next_post() {

                $this->current_post++;

                $this->post = $this->posts[$this->current_post];
                return $this->post;
        }

        /**
         * Sets up the current post.
         *
         * Retrieves the next post, sets up the post, sets the 'in the loop'
         * property to true.
         *
         * @since 1.5.0
         * @access public
         *
         * @global WP_Post $post
         */
        public function the_post() {
                global $post;
                $this->in_the_loop = true;

                if ( $this->current_post == -1 ) // loop has just started
                        /**
                         * Fires once the loop is started.
                         *
                         * @since 2.0.0
                         *
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        do_action_ref_array( 'loop_start', array( &$this ) );

                $post = $this->next_post();
                $this->setup_postdata( $post );
        }

        /**
         * Whether there are more posts available in the loop.
         *
         * Calls action 'loop_end', when the loop is complete.
         *
         * @since 1.5.0
         * @access public
         *
         * @return bool True if posts are available, false if end of loop.
         */
        public function have_posts() {
                if ( $this->current_post + 1 < $this->post_count ) {
                        return true;
                } elseif ( $this->current_post + 1 == $this->post_count && $this->post_count > 0 ) {
                        /**
                         * Fires once the loop has ended.
                         *
                         * @since 2.0.0
                         *
                         * @param WP_Query &$this The WP_Query instance (passed by reference).
                         */
                        do_action_ref_array( 'loop_end', array( &$this ) );
                        // Do some cleaning up after the loop
                        $this->rewind_posts();
                }

                $this->in_the_loop = false;
                return false;
        }

        /**
         * Rewind the posts and reset post index.
         *
         * @since 1.5.0
         * @access public
         */
        public function rewind_posts() {
                $this->current_post = -1;
                if ( $this->post_count > 0 ) {
                        $this->post = $this->posts[0];
                }
        }

        /**
         * Iterate current comment index and return WP_Comment object.
         *
         * @since 2.2.0
         * @access public
         *
         * @return WP_Comment Comment object.
         */
        public function next_comment() {
                $this->current_comment++;

                $this->comment = $this->comments[$this->current_comment];
                return $this->comment;
        }

        /**
         * Sets up the current comment.
         *
         * @since 2.2.0
         * @access public
         * @global WP_Comment $comment Current comment.
         */
        public function the_comment() {
                global $comment;

                $comment = $this->next_comment();

                if ( $this->current_comment == 0 ) {
                        /**
                         * Fires once the comment loop is started.
                         *
                         * @since 2.2.0
                         */
                        do_action( 'comment_loop_start' );
                }
        }

        /**
         * Whether there are more comments available.
         *
         * Automatically rewinds comments when finished.
         *
         * @since 2.2.0
         * @access public
         *
         * @return bool True, if more comments. False, if no more posts.
         */
        public function have_comments() {
                if ( $this->current_comment + 1 < $this->comment_count ) {
                        return true;
                } elseif ( $this->current_comment + 1 == $this->comment_count ) {
                        $this->rewind_comments();
                }

                return false;
        }

        /**
         * Rewind the comments, resets the comment index and comment to first.
         *
         * @since 2.2.0
         * @access public
         */
        public function rewind_comments() {
                $this->current_comment = -1;
                if ( $this->comment_count > 0 ) {
                        $this->comment = $this->comments[0];
                }
        }

        /**
         * Sets up the WordPress query by parsing query string.
         *
         * @since 1.5.0
         * @access public
         *
         * @param string $query URL query string.
         * @return array List of posts.
         */
        public function query( $query ) {
                $this->init();
                $this->query = $this->query_vars = wp_parse_args( $query );
                return $this->get_posts();
        }

        /**
         * Retrieve queried object.
         *
         * If queried object is not set, then the queried object will be set from
         * the category, tag, taxonomy, posts page, single post, page, or author
         * query variable. After it is set up, it will be returned.
         *
         * @since 1.5.0
         * @access public
         *
         * @return object
         */
        public function get_queried_object() {
                if ( isset($this->queried_object) )
                        return $this->queried_object;

                $this->queried_object = null;
                $this->queried_object_id = null;

                if ( $this->is_category || $this->is_tag || $this->is_tax ) {
                        if ( $this->is_category ) {
                                if ( $this->get( 'cat' ) ) {
                                        $term = get_term( $this->get( 'cat' ), 'category' );
                                } elseif ( $this->get( 'category_name' ) ) {
                                        $term = get_term_by( 'slug', $this->get( 'category_name' ), 'category' );
                                }
                        } elseif ( $this->is_tag ) {
                                if ( $this->get( 'tag_id' ) ) {
                                        $term = get_term( $this->get( 'tag_id' ), 'post_tag' );
                                } elseif ( $this->get( 'tag' ) ) {
                                        $term = get_term_by( 'slug', $this->get( 'tag' ), 'post_tag' );
                                }
                        } else {
                                // For other tax queries, grab the first term from the first clause.
                                $tax_query_in_and = wp_list_filter( $this->tax_query->queried_terms, array( 'operator' => 'NOT IN' ), 'NOT' );

                                if ( ! empty( $tax_query_in_and ) ) {
                                        $queried_taxonomies = array_keys( $tax_query_in_and );
                                        $matched_taxonomy = reset( $queried_taxonomies );
                                        $query = $tax_query_in_and[ $matched_taxonomy ];

                                        if ( $query['terms'] ) {
                                                if ( 'term_id' == $query['field'] ) {
                                                        $term = get_term( reset( $query['terms'] ), $matched_taxonomy );
                                                } else {
                                                        $term = get_term_by( $query['field'], reset( $query['terms'] ), $matched_taxonomy );
                                                }
                                        }
                                }
                        }

                        if ( ! empty( $term ) && ! is_wp_error( $term ) )  {
                                $this->queried_object = $term;
                                $this->queried_object_id = (int) $term->term_id;

                                if ( $this->is_category && 'category' === $this->queried_object->taxonomy )
                                        _make_cat_compat( $this->queried_object );
                        }
                } elseif ( $this->is_post_type_archive ) {
                        $post_type = $this->get( 'post_type' );
                        if ( is_array( $post_type ) )
                                $post_type = reset( $post_type );
                        $this->queried_object = get_post_type_object( $post_type );
                } elseif ( $this->is_posts_page ) {
                        $page_for_posts = get_option('page_for_posts');
                        $this->queried_object = get_post( $page_for_posts );
                        $this->queried_object_id = (int) $this->queried_object->ID;
                } elseif ( $this->is_singular && ! empty( $this->post ) ) {
                        $this->queried_object = $this->post;
                        $this->queried_object_id = (int) $this->post->ID;
                } elseif ( $this->is_author ) {
                        $this->queried_object_id = (int) $this->get('author');
                        $this->queried_object = get_userdata( $this->queried_object_id );
                }

                return $this->queried_object;
        }

        /**
         * Retrieve ID of the current queried object.
         *
         * @since 1.5.0
         * @access public
         *
         * @return int
         */
        public function get_queried_object_id() {
                $this->get_queried_object();

                if ( isset($this->queried_object_id) ) {
                        return $this->queried_object_id;
                }

                return 0;
        }

        /**
         * Constructor.
         *
         * Sets up the WordPress query, if parameter is not empty.
         *
         * @since 1.5.0
         * @access public
         *
         * @param string|array $query URL query string or array of vars.
         */
        public function __construct($query = '') {
                if ( ! empty($query) ) {
                        $this->query($query);
                }
        }

        /**
         * Make private properties readable for backwards compatibility.
         *
         * @since 4.0.0
         * @access public
         *
         * @param string $name Property to get.
         * @return mixed Property.
         */
        public function __get( $name ) {
                if ( in_array( $name, $this->compat_fields ) ) {
                        return $this->$name;
                }
        }

        /**
         * Make private properties checkable for backwards compatibility.
         *
         * @since 4.0.0
         * @access public
         *
         * @param string $name Property to check if set.
         * @return bool Whether the property is set.
         */
        public function __isset( $name ) {
                if ( in_array( $name, $this->compat_fields ) ) {
                        return isset( $this->$name );
                }
        }

        /**
         * Make private/protected methods readable for backwards compatibility.
         *
         * @since 4.0.0
         * @access public
         *
         * @param callable $name      Method to call.
         * @param array    $arguments Arguments to pass when calling.
         * @return mixed|false Return value of the callback, false otherwise.
         */
        public function __call( $name, $arguments ) {
                if ( in_array( $name, $this->compat_methods ) ) {
                        return call_user_func_array( array( $this, $name ), $arguments );
                }
                return false;
        }

        /**
         * Is the query for an existing archive page?
         *
         * Month, Year, Category, Author, Post Type archive...
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_archive() {
                return (bool) $this->is_archive;
        }

        /**
         * Is the query for an existing post type archive page?
         *
         * @since 3.1.0
         *
         * @param mixed $post_types Optional. Post type or array of posts types to check against.
         * @return bool
         */
        public function is_post_type_archive( $post_types = '' ) {
                if ( empty( $post_types ) || ! $this->is_post_type_archive )
                        return (bool) $this->is_post_type_archive;

                $post_type = $this->get( 'post_type' );
                if ( is_array( $post_type ) )
                        $post_type = reset( $post_type );
                $post_type_object = get_post_type_object( $post_type );

                return in_array( $post_type_object->name, (array) $post_types );
        }

        /**
         * Is the query for an existing attachment page?
         *
         * @since 3.1.0
         *
         * @param mixed $attachment Attachment ID, title, slug, or array of such.
         * @return bool
         */
        public function is_attachment( $attachment = '' ) {
                if ( ! $this->is_attachment ) {
                        return false;
                }

                if ( empty( $attachment ) ) {
                        return true;
                }

                $attachment = array_map( 'strval', (array) $attachment );

                $post_obj = $this->get_queried_object();

                if ( in_array( (string) $post_obj->ID, $attachment ) ) {
                        return true;
                } elseif ( in_array( $post_obj->post_title, $attachment ) ) {
                        return true;
                } elseif ( in_array( $post_obj->post_name, $attachment ) ) {
                        return true;
                }
                return false;
        }

        /**
         * Is the query for an existing author archive page?
         *
         * If the $author parameter is specified, this function will additionally
         * check if the query is for one of the authors specified.
         *
         * @since 3.1.0
         *
         * @param mixed $author Optional. User ID, nickname, nicename, or array of User IDs, nicknames, and nicenames
         * @return bool
         */
        public function is_author( $author = '' ) {
                if ( !$this->is_author )
                        return false;

                if ( empty($author) )
                        return true;

                $author_obj = $this->get_queried_object();

                $author = array_map( 'strval', (array) $author );

                if ( in_array( (string) $author_obj->ID, $author ) )
                        return true;
                elseif ( in_array( $author_obj->nickname, $author ) )
                        return true;
                elseif ( in_array( $author_obj->user_nicename, $author ) )
                        return true;

                return false;
        }

        /**
         * Is the query for an existing category archive page?
         *
         * If the $category parameter is specified, this function will additionally
         * check if the query is for one of the categories specified.
         *
         * @since 3.1.0
         *
         * @param mixed $category Optional. Category ID, name, slug, or array of Category IDs, names, and slugs.
         * @return bool
         */
        public function is_category( $category = '' ) {
                if ( !$this->is_category )
                        return false;

                if ( empty($category) )
                        return true;

                $cat_obj = $this->get_queried_object();

                $category = array_map( 'strval', (array) $category );

                if ( in_array( (string) $cat_obj->term_id, $category ) )
                        return true;
                elseif ( in_array( $cat_obj->name, $category ) )
                        return true;
                elseif ( in_array( $cat_obj->slug, $category ) )
                        return true;

                return false;
        }

        /**
         * Is the query for an existing tag archive page?
         *
         * If the $tag parameter is specified, this function will additionally
         * check if the query is for one of the tags specified.
         *
         * @since 3.1.0
         *
         * @param mixed $tag Optional. Tag ID, name, slug, or array of Tag IDs, names, and slugs.
         * @return bool
         */
        public function is_tag( $tag = '' ) {
                if ( ! $this->is_tag )
                        return false;

                if ( empty( $tag ) )
                        return true;

                $tag_obj = $this->get_queried_object();

                $tag = array_map( 'strval', (array) $tag );

                if ( in_array( (string) $tag_obj->term_id, $tag ) )
                        return true;
                elseif ( in_array( $tag_obj->name, $tag ) )
                        return true;
                elseif ( in_array( $tag_obj->slug, $tag ) )
                        return true;

                return false;
        }

        /**
         * Is the query for an existing taxonomy archive page?
         *
         * If the $taxonomy parameter is specified, this function will additionally
         * check if the query is for that specific $taxonomy.
         *
         * If the $term parameter is specified in addition to the $taxonomy parameter,
         * this function will additionally check if the query is for one of the terms
         * specified.
         *
         * @since 3.1.0
         *
         * @global array $wp_taxonomies
         *
         * @param mixed $taxonomy Optional. Taxonomy slug or slugs.
         * @param mixed $term     Optional. Term ID, name, slug or array of Term IDs, names, and slugs.
         * @return bool
         */
        public function is_tax( $taxonomy = '', $term = '' ) {
                global $wp_taxonomies;

                if ( !$this->is_tax )
                        return false;

                if ( empty( $taxonomy ) )
                        return true;

                $queried_object = $this->get_queried_object();
                $tax_array = array_intersect( array_keys( $wp_taxonomies ), (array) $taxonomy );
                $term_array = (array) $term;

                // Check that the taxonomy matches.
                if ( ! ( isset( $queried_object->taxonomy ) && count( $tax_array ) && in_array( $queried_object->taxonomy, $tax_array ) ) )
                        return false;

                // Only a Taxonomy provided.
                if ( empty( $term ) )
                        return true;

                return isset( $queried_object->term_id ) &&
                        count( array_intersect(
                                array( $queried_object->term_id, $queried_object->name, $queried_object->slug ),
                                $term_array
                        ) );
        }

        /**
         * Whether the current URL is within the comments popup window.
         *
         * @since 3.1.0
         * @deprecated 4.5.0
         *
         * @return bool
         */
        public function is_comments_popup() {
                _deprecated_function( __FUNCTION__, '4.5' );

                return false;
        }

        /**
         * Is the query for an existing date archive?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_date() {
                return (bool) $this->is_date;
        }

        /**
         * Is the query for an existing day archive?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_day() {
                return (bool) $this->is_day;
        }

        /**
         * Is the query for a feed?
         *
         * @since 3.1.0
         *
         * @param string|array $feeds Optional feed types to check.
         * @return bool
         */
        public function is_feed( $feeds = '' ) {
                if ( empty( $feeds ) || ! $this->is_feed )
                        return (bool) $this->is_feed;
                $qv = $this->get( 'feed' );
                if ( 'feed' == $qv )
                        $qv = get_default_feed();
                return in_array( $qv, (array) $feeds );
        }

        /**
         * Is the query for a comments feed?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_comment_feed() {
                return (bool) $this->is_comment_feed;
        }

        /**
         * Is the query for the front page of the site?
         *
         * This is for what is displayed at your site's main URL.
         *
         * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'.
         *
         * If you set a static page for the front page of your site, this function will return
         * true when viewing that page.
         *
         * Otherwise the same as @see WP_Query::is_home()
         *
         * @since 3.1.0
         *
         * @return bool True, if front of site.
         */
        public function is_front_page() {
                // most likely case
                if ( 'posts' == get_option( 'show_on_front') && $this->is_home() )
                        return true;
                elseif ( 'page' == get_option( 'show_on_front') && get_option( 'page_on_front' ) && $this->is_page( get_option( 'page_on_front' ) ) )
                        return true;
                else
                        return false;
        }

        /**
         * Is the query for the blog homepage?
         *
         * This is the page which shows the time based blog content of your site.
         *
         * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_for_posts'.
         *
         * If you set a static page for the front page of your site, this function will return
         * true only on the page you set as the "Posts page".
         *
         * @see WP_Query::is_front_page()
         *
         * @since 3.1.0
         *
         * @return bool True if blog view homepage.
         */
        public function is_home() {
                return (bool) $this->is_home;
        }

        /**
         * Is the query for an existing month archive?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_month() {
                return (bool) $this->is_month;
        }

        /**
         * Is the query for an existing single page?
         *
         * If the $page parameter is specified, this function will additionally
         * check if the query is for one of the pages specified.
         *
         * @see WP_Query::is_single()
         * @see WP_Query::is_singular()
         *
         * @since 3.1.0
         *
         * @param int|string|array $page Optional. Page ID, title, slug, path, or array of such. Default empty.
         * @return bool Whether the query is for an existing single page.
         */
        public function is_page( $page = '' ) {
                if ( !$this->is_page )
                        return false;

                if ( empty( $page ) )
                        return true;

                $page_obj = $this->get_queried_object();

                $page = array_map( 'strval', (array) $page );

                if ( in_array( (string) $page_obj->ID, $page ) ) {
                        return true;
                } elseif ( in_array( $page_obj->post_title, $page ) ) {
                        return true;
                } elseif ( in_array( $page_obj->post_name, $page ) ) {
                        return true;
                } else {
                        foreach ( $page as $pagepath ) {
                                if ( ! strpos( $pagepath, '/' ) ) {
                                        continue;
                                }
                                $pagepath_obj = get_page_by_path( $pagepath );

                                if ( $pagepath_obj && ( $pagepath_obj->ID == $page_obj->ID ) ) {
                                        return true;
                                }
                        }
                }

                return false;
        }

        /**
         * Is the query for paged result and not for the first page?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_paged() {
                return (bool) $this->is_paged;
        }

        /**
         * Is the query for a post or page preview?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_preview() {
                return (bool) $this->is_preview;
        }

        /**
         * Is the query for the robots file?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_robots() {
                return (bool) $this->is_robots;
        }

        /**
         * Is the query for a search?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_search() {
                return (bool) $this->is_search;
        }

        /**
         * Is the query for an existing single post?
         *
         * Works for any post type, except attachments and pages
         *
         * If the $post parameter is specified, this function will additionally
         * check if the query is for one of the Posts specified.
         *
         * @see WP_Query::is_page()
         * @see WP_Query::is_singular()
         *
         * @since 3.1.0
         *
         * @param int|string|array $post Optional. Post ID, title, slug, path, or array of such. Default empty.
         * @return bool Whether the query is for an existing single post.
         */
        public function is_single( $post = '' ) {
                if ( !$this->is_single )
                        return false;

                if ( empty($post) )
                        return true;

                $post_obj = $this->get_queried_object();

                $post = array_map( 'strval', (array) $post );

                if ( in_array( (string) $post_obj->ID, $post ) ) {
                        return true;
                } elseif ( in_array( $post_obj->post_title, $post ) ) {
                        return true;
                } elseif ( in_array( $post_obj->post_name, $post ) ) {
                        return true;
                } else {
                        foreach ( $post as $postpath ) {
                                if ( ! strpos( $postpath, '/' ) ) {
                                        continue;
                                }
                                $postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

                                if ( $postpath_obj && ( $postpath_obj->ID == $post_obj->ID ) ) {
                                        return true;
                                }
                        }
                }
                return false;
        }

        /**
         * Is the query for an existing single post of any post type (post, attachment, page, ... )?
         *
         * If the $post_types parameter is specified, this function will additionally
         * check if the query is for one of the Posts Types specified.
         *
         * @see WP_Query::is_page()
         * @see WP_Query::is_single()
         *
         * @since 3.1.0
         *
         * @param string|array $post_types Optional. Post type or array of post types. Default empty.
         * @return bool Whether the query is for an existing single post of any of the given post types.
         */
        public function is_singular( $post_types = '' ) {
                if ( empty( $post_types ) || !$this->is_singular )
                        return (bool) $this->is_singular;

                $post_obj = $this->get_queried_object();

                return in_array( $post_obj->post_type, (array) $post_types );
        }

        /**
         * Is the query for a specific time?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_time() {
                return (bool) $this->is_time;
        }

        /**
         * Is the query for a trackback endpoint call?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_trackback() {
                return (bool) $this->is_trackback;
        }

        /**
         * Is the query for an existing year archive?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_year() {
                return (bool) $this->is_year;
        }

        /**
         * Is the query a 404 (returns no results)?
         *
         * @since 3.1.0
         *
         * @return bool
         */
        public function is_404() {
                return (bool) $this->is_404;
        }

        /**
         * Is the query for an embedded post?
         *
         * @since 4.4.0
         *
         * @return bool
         */
        public function is_embed() {
                return (bool) $this->is_embed;
        }

        /**
         * Is the query the main query?
         *
         * @since 3.3.0
         *
         * @global WP_Query $wp_query Global WP_Query instance.
         *
         * @return bool
         */
        public function is_main_query() {
                global $wp_the_query;
                return $wp_the_query === $this;
        }

        /**
         * Set up global post data.
         *
         * @since 4.1.0
         * @since 4.4.0 Added the ability to pass a post ID to `$post`.
         *
         * @global int             $id
         * @global WP_User         $authordata
         * @global string|int|bool $currentday
         * @global string|int|bool $currentmonth
         * @global int             $page
         * @global array           $pages
         * @global int             $multipage
         * @global int             $more
         * @global int             $numpages
         *
         * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
         * @return true True when finished.
         */
        public function setup_postdata( $post ) {
                global $id, $authordata, $currentday, $currentmonth, $page, $pages, $multipage, $more, $numpages;

                if ( ! ( $post instanceof WP_Post ) ) {
                        $post = get_post( $post );
                }

                if ( ! $post ) {
                        return;
                }

                $id = (int) $post->ID;

                $authordata = get_userdata($post->post_author);

                $currentday = mysql2date('d.m.y', $post->post_date, false);
                $currentmonth = mysql2date('m', $post->post_date, false);
                $numpages = 1;
                $multipage = 0;
                $page = $this->get( 'page' );
                if ( ! $page )
                        $page = 1;

                /*
                 * Force full post content when viewing the permalink for the $post,
                 * or when on an RSS feed. Otherwise respect the 'more' tag.
                 */
                if ( $post->ID === get_queried_object_id() && ( $this->is_page() || $this->is_single() ) ) {
                        $more = 1;
                } elseif ( $this->is_feed() ) {
                        $more = 1;
                } else {
                        $more = 0;
                }

                $content = $post->post_content;
                if ( false !== strpos( $content, '<!--nextpage-->' ) ) {
                        $content = str_replace( "\n<!--nextpage-->\n", '<!--nextpage-->', $content );
                        $content = str_replace( "\n<!--nextpage-->", '<!--nextpage-->', $content );
                        $content = str_replace( "<!--nextpage-->\n", '<!--nextpage-->', $content );

                        // Ignore nextpage at the beginning of the content.
                        if ( 0 === strpos( $content, '<!--nextpage-->' ) )
                                $content = substr( $content, 15 );

                        $pages = explode('<!--nextpage-->', $content);
                } else {
                        $pages = array( $post->post_content );
                }

                /**
                 * Filter the "pages" derived from splitting the post content.
                 *
                 * "Pages" are determined by splitting the post content based on the presence
                 * of `<!-- nextpage -->` tags.
                 *
                 * @since 4.4.0
                 *
                 * @param array   $pages Array of "pages" derived from the post content.
                 *                       of `<!-- nextpage -->` tags..
                 * @param WP_Post $post  Current post object.
                 */
                $pages = apply_filters( 'content_pagination', $pages, $post );

                $numpages = count( $pages );

                if ( $numpages > 1 ) {
                        if ( $page > 1 ) {
                                $more = 1;
                        }
                        $multipage = 1;
                } else {
                        $multipage = 0;
                }

                /**
                 * Fires once the post data has been setup.
                 *
                 * @since 2.8.0
                 * @since 4.1.0 Introduced `$this` parameter.
                 *
                 * @param WP_Post  &$post The Post object (passed by reference).
                 * @param WP_Query &$this The current Query object (passed by reference).
                 */
                do_action_ref_array( 'the_post', array( &$post, &$this ) );

                return true;
        }
        /**
         * After looping through a nested query, this function
         * restores the $post global to the current post in this query.
         *
         * @since 3.7.0
         *
         * @global WP_Post $post
         */
        public function reset_postdata() {
                if ( ! empty( $this->post ) ) {
                        $GLOBALS['post'] = $this->post;
                        $this->setup_postdata( $this->post );
                }
        }

        /**
         * Lazyload term meta for posts in the loop.
         *
         * @since 4.4.0
         * @deprecated 4.5.0 See wp_queue_posts_for_term_meta_lazyload().
         *
         * @param mixed $check
         * @param int   $term_id
         * @return mixed
         */
        public function lazyload_term_meta( $check, $term_id ) {
                _deprecated_function( __METHOD__, '4.5.0' );
                return $check;
        }

        /**
         * Lazyload comment meta for comments in the loop.
         *
         * @since 4.4.0
         * @deprecated 4.5.0 See wp_queue_comments_for_comment_meta_lazyload().
         *
         * @param mixed $check
         * @param int   $comment_id
         * @return mixed
         */
        public function lazyload_comment_meta( $check, $comment_id ) {
                _deprecated_function( __METHOD__, '4.5.0' );
                return $check;
        }
}

/**
 * Redirect old slugs to the correct permalink.
 *
 * Attempts to find the current slug from the past slugs.
 *
 * @since 2.1.0
 *
 * @global WP_Query   $wp_query   Global WP_Query instance.
 * @global wpdb       $wpdb       WordPress database abstraction object.
 */
function wp_old_slug_redirect() {
        global $wp_query;

        if ( is_404() && '' !== $wp_query->query_vars['name'] ) :
                global $wpdb;

                // Guess the current post_type based on the query vars.
                if ( get_query_var( 'post_type' ) ) {
                        $post_type = get_query_var( 'post_type' );
                } elseif ( get_query_var( 'attachment' ) ) {
                        $post_type = 'attachment';
                } elseif ( ! empty( $wp_query->query_vars['pagename'] ) ) {
                        $post_type = 'page';
                } else {
                        $post_type = 'post';
                }

                if ( is_array( $post_type ) ) {
                        if ( count( $post_type ) > 1 )
                                return;
                        $post_type = reset( $post_type );
                }

                // Do not attempt redirect for hierarchical post types
                if ( is_post_type_hierarchical( $post_type ) )
                        return;

                $query = $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_slug' AND meta_value = %s", $post_type, $wp_query->query_vars['name']);

                // if year, monthnum, or day have been specified, make our query more precise
                // just in case there are multiple identical _wp_old_slug values
                if ( '' != $wp_query->query_vars['year'] )
                        $query .= $wpdb->prepare(" AND YEAR(post_date) = %d", $wp_query->query_vars['year']);
                if ( '' != $wp_query->query_vars['monthnum'] )
                        $query .= $wpdb->prepare(" AND MONTH(post_date) = %d", $wp_query->query_vars['monthnum']);
                if ( '' != $wp_query->query_vars['day'] )
                        $query .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", $wp_query->query_vars['day']);

                $id = (int) $wpdb->get_var($query);

                if ( ! $id )
                        return;

                $link = get_permalink( $id );

                if ( isset( $GLOBALS['wp_query']->query_vars['paged'] ) && $GLOBALS['wp_query']->query_vars['paged'] > 1 ) {
                        $link = user_trailingslashit( trailingslashit( $link ) . 'page/' . $GLOBALS['wp_query']->query_vars['paged'] );
                } elseif( is_embed() ) {
                        $link = user_trailingslashit( trailingslashit( $link ) . 'embed' );
                }

                /**
                 * Filter the old slug redirect URL.
                 *
                 * @since 4.4.0
                 *
                 * @param string $link The redirect URL.
                 */
                $link = apply_filters( 'old_slug_redirect_url', $link );

                if ( ! $link ) {
                        return;
                }

                wp_redirect( $link, 301 ); // Permanent redirect
                exit;
        endif;
}

/**
 * Set up global post data.
 *
 * @since 1.5.0
 * @since 4.4.0 Added the ability to pass a post ID to `$post`.
 *
 * @global WP_Query $wp_query Global WP_Query instance.
 *
 * @param WP_Post|object|int $post WP_Post instance or Post ID/object.
 * @return bool True when finished.
 */
function setup_postdata( $post ) {
        global $wp_query;

        if ( ! empty( $wp_query ) && $wp_query instanceof WP_Query ) {
                return $wp_query->setup_postdata( $post );
        }

        return false;
}