Ticket #10788: functions.php

<?php
/**
 * Main WordPress API
 *
 * @package WordPress
 */

/**
 * Converts MySQL DATETIME field to user specified date format.
 *
 * If $dateformatstring has 'G' value, then gmmktime() function will be used to
 * make the time. If $dateformatstring is set to 'U', then mktime() function
 * will be used to make the time.
 *
 * The $translate will only be used, if it is set to true and it is by default
 * and if the $wp_locale object has the month and weekday set.
 *
 * @since 0.71
 *
 * @param string $dateformatstring Either 'G', 'U', or php date format.
 * @param string $mysqlstring Time from mysql DATETIME field.
 * @param bool $translate Optional. Default is true. Will switch format to locale.
 * @return string Date formated by $dateformatstring or locale (if available).
 */
function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) {
        global $wp_locale;
        $m = $mysqlstring;
        if ( empty( $m ) )
                return false;

        if( 'G' == $dateformatstring ) {
                return strtotime( $m . ' +0000' );
        }

        $i = strtotime( $m );

        if( 'U' == $dateformatstring )
                return $i;

        if ( $translate)
            return date_i18n( $dateformatstring, $i );
        else
            return date( $dateformatstring, $i );
}

/**
 * Retrieve the current time based on specified type.
 *
 * The 'mysql' type will return the time in the format for MySQL DATETIME field.
 * The 'timestamp' type will return the current timestamp.
 *
 * If $gmt is set to either '1' or 'true', then both types will use GMT time.
 * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
 *
 * @since 1.0.0
 *
 * @param string $type Either 'mysql' or 'timestamp'.
 * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false.
 * @return int|string String if $type is 'gmt', int if $type is 'timestamp'.
 */
function current_time( $type, $gmt = 0 ) {
        switch ( $type ) {
                case 'mysql':
                        return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
                        break;
                case 'timestamp':
                        return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
                        break;
        }
}

/**
 * Retrieve the date in localized format, based on timestamp.
 *
 * If the locale specifies the locale month and weekday, then the locale will
 * take over the format for the date. If it isn't, then the date format string
 * will be used instead.
 *
 * @since 0.71
 *
 * @param string $dateformatstring Format to display the date.
 * @param int $unixtimestamp Optional. Unix timestamp.
 * @param bool $gmt Optional, default is false. Whether to convert to GMT for time.
 * @return string The date, translated if locale specifies it.
 */
function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
        global $wp_locale;
        $i = $unixtimestamp;
        // Sanity check for PHP 5.1.0-
        if ( false === $i || intval($i) < 0 ) {
                if ( ! $gmt )
                        $i = current_time( 'timestamp' );
                else
                        $i = time();
                // we should not let date() interfere with our
                // specially computed timestamp
                $gmt = true;
        }

        // store original value for language with untypical grammars
        // see http://core.trac.wordpress.org/ticket/9396
        $req_format = $dateformatstring;

        $datefunc = $gmt? 'gmdate' : 'date';

        if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
                $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );
                $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
                $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );
                $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
                $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );
                $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );
                $dateformatstring = ' '.$dateformatstring;
                $dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
                $dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
                $dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
                $dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
                $dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
                $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );

                $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
        }
        $j = @$datefunc( $dateformatstring, $i );
        // allow plugins to redo this entirely for languages with untypical grammars
        $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt);
        return $j;
}

/**
 * Convert number to format based on the locale.
 *
 * @since 2.3.0
 *
 * @param mixed $number The number to convert based on locale.
 * @param int $decimals Precision of the number of decimal places.
 * @return string Converted number in string format.
 */
function number_format_i18n( $number, $decimals = null ) {
        global $wp_locale;
        // let the user override the precision only
        $decimals = ( is_null( $decimals ) ) ? $wp_locale->number_format['decimals'] : intval( $decimals );

        $num = number_format( $number, $decimals, $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );

        // let the user translate digits from latin to localized language
        return apply_filters( 'number_format_i18n', $num );
}

/**
 * Convert number of bytes largest unit bytes will fit into.
 *
 * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts
 * number of bytes to human readable number by taking the number of that unit
 * that the bytes will go into it. Supports TB value.
 *
 * Please note that integers in PHP are limited to 32 bits, unless they are on
 * 64 bit architecture, then they have 64 bit size. If you need to place the
 * larger size then what PHP integer type will hold, then use a string. It will
 * be converted to a double, which should always have 64 bit length.
 *
 * Technically the correct unit names for powers of 1024 are KiB, MiB etc.
 * @link http://en.wikipedia.org/wiki/Byte
 *
 * @since 2.3.0
 *
 * @param int|string $bytes Number of bytes. Note max integer size for integers.
 * @param int $decimals Precision of number of decimal places.
 * @return bool|string False on failure. Number string on success.
 */
function size_format( $bytes, $decimals = null ) {
        $quant = array(
                // ========================= Origin ====
                'TB' => 1099511627776,  // pow( 1024, 4)
                'GB' => 1073741824,     // pow( 1024, 3)
                'MB' => 1048576,        // pow( 1024, 2)
                'kB' => 1024,           // pow( 1024, 1)
                'B ' => 1,              // pow( 1024, 0)
        );

        foreach ( $quant as $unit => $mag )
                if ( doubleval($bytes) >= $mag )
                        return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;

        return false;
}

/**
 * Get the week start and end from the datetime or date string from mysql.
 *
 * @since 0.71
 *
 * @param string $mysqlstring Date or datetime field type from mysql.
 * @param int $start_of_week Optional. Start of the week as an integer.
 * @return array Keys are 'start' and 'end'.
 */
function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
        $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year
        $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month
        $md = substr( $mysqlstring, 5, 2 ); // Mysql string day
        $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day.
        $weekday = date( 'w', $day ); // The day of the week from the timestamp
        $i = 86400; // One day
        if( !is_numeric($start_of_week) )
                $start_of_week = get_option( 'start_of_week' );

        if ( $weekday < $start_of_week )
                $weekday = 7 - $start_of_week - $weekday;

        while ( $weekday > $start_of_week ) {
                $weekday = date( 'w', $day );
                if ( $weekday < $start_of_week )
                        $weekday = 7 - $start_of_week - $weekday;

                $day -= 86400;
                $i = 0;
        }
        $week['start'] = $day + 86400 - $i;
        $week['end'] = $week['start'] + 604799;
        return $week;
}

/**
 * Unserialize value only if it was serialized.
 *
 * @since 2.0.0
 *
 * @param string $original Maybe unserialized original, if is needed.
 * @return mixed Unserialized data can be any type.
 */
function maybe_unserialize( $original ) {
        if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
                return @unserialize( $original );
        return $original;
}

/**
 * Check value to find if it was serialized.
 *
 * If $data is not an string, then returned value will always be false.
 * Serialized data is always a string.
 *
 * @since 2.0.5
 *
 * @param mixed $data Value to check to see if was serialized.
 * @return bool False if not serialized and true if it was.
 */
function is_serialized( $data ) {
        // if it isn't a string, it isn't serialized
        if ( !is_string( $data ) )
                return false;
        $data = trim( $data );
        if ( 'N;' == $data )
                return true;
        if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
                return false;
        switch ( $badions[1] ) {
                case 'a' :
                case 'O' :
                case 's' :
                        if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
                                return true;
                        break;
                case 'b' :
                case 'i' :
                case 'd' :
                        if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
                                return true;
                        break;
        }
        return false;
}

/**
 * Check whether serialized data is of string type.
 *
 * @since 2.0.5
 *
 * @param mixed $data Serialized data
 * @return bool False if not a serialized string, true if it is.
 */
function is_serialized_string( $data ) {
        // if it isn't a string, it isn't a serialized string
        if ( !is_string( $data ) )
                return false;
        $data = trim( $data );
        if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings
                return true;
        return false;
}

/**
 * Retrieve option value based on option name.
 *
 * If the option does not exist or does not have a value, then the return value
 * will be false. This is useful to check whether you need to install an option
 * and is commonly used during installation of plugin options and to test
 * whether upgrading is required.
 *
 * You can "short-circuit" the retrieval of the option from the database for
 * your plugin or core options that aren't protected. You can do so by hooking
 * into the 'pre_option_$option' with the $option being replaced by the option
 * name. You should not try to override special options, but you will not be
 * prevented from doing so.
 *
 * There is a second filter called 'option_$option' with the $option being
 * replaced with the option name. This gives the value as the only parameter.
 *
 * If the option was serialized, when the option was added and, or updated, then
 * it will be unserialized, when it is returned.
 *
 * @since 1.5.0
 * @package WordPress
 * @subpackage Option
 * @uses apply_filters() Calls 'pre_option_$option' null to allow overwriting
 *              the option value in a plugin.
 * @uses apply_filters() Calls 'option_$option' with the option name value.
 *
 * @param string $option Name of option to retrieve. Should already be SQL-escaped
 * @param mixed $default Optional value to return if option doesn't exist
 * @return mixed Value set for the option.
 */
function get_option( $option, $default = false ) {
        global $wpdb;

        // Allow plugins to short-circuit options.
        $pre = apply_filters( 'pre_option_' . $option, null );
        if ( null !== $pre )
                return $pre;

        // prevent non-existent options from triggering multiple queries
        $notoptions = wp_cache_get( 'notoptions', 'options' );
        if ( isset( $notoptions[$option] ) )
                return $default;

        $alloptions = wp_load_alloptions();

        if ( isset( $alloptions[$option] ) ) {
                $value = $alloptions[$option];
        } else {
                $value = wp_cache_get( $option, 'options' );

                if ( false === $value ) {
                        if ( defined( 'WP_INSTALLING' ) )
                                $suppress = $wpdb->suppress_errors();
                        // expected_slashed ($option)
                        $row = $wpdb->get_row( "SELECT option_value FROM $wpdb->options WHERE option_name = '$option' LIMIT 1" );
                        if ( defined( 'WP_INSTALLING' ) )
                                $wpdb->suppress_errors($suppress);

                        // Has to be get_row instead of get_var because of funkiness with 0, false, null values
                        if ( is_object( $row ) ) {
                                $value = $row->option_value;
                                wp_cache_add( $option, $value, 'options' );
                        } else { // option does not exist, so we must cache its non-existence
                                $notoptions[$option] = true;
                                wp_cache_set( 'notoptions', $notoptions, 'options' );
                                return $default;
                        }
                }
        }

        // If home is not set use siteurl.
        if ( 'home' == $option && '' == $value )
                return get_option( 'siteurl' );

        if ( in_array( $option, array( 'siteurl', 'home', 'category_base', 'tag_base' ) ) )
                $value = untrailingslashit( $value );

        return apply_filters( 'option_' . $option, maybe_unserialize( $value ) );
}

/**
 * Protect WordPress special option from being modified.
 *
 * Will die if $option is in protected list. Protected options are 'alloptions'
 * and 'notoptions' options.
 *
 * @since 2.2.0
 * @package WordPress
 * @subpackage Option
 *
 * @param string $option Option name.
 */
function wp_protect_special_option( $option ) {
        $protected = array( 'alloptions', 'notoptions' );
        if ( in_array( $option, $protected ) )
                die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) );
}

/**
 * Print option value after sanitizing for forms.
 *
 * @uses attr Sanitizes value.
 * @since 1.5.0
 * @package WordPress
 * @subpackage Option
 *
 * @param string $option Option name.
 */
function form_option( $option ) {
        echo esc_attr(get_option( $option ) );
}

/**
 * Retrieve all autoload options or all options, if no autoloaded ones exist.
 *
 * This is different from wp_load_alloptions() in that this function does not
 * cache its results and will retrieve all options from the database every time
 *
 * it is called.
 *
 * @since 1.0.0
 * @package WordPress
 * @subpackage Option
 * @uses apply_filters() Calls 'pre_option_$optionname' hook with option value as parameter.
 * @uses apply_filters() Calls 'all_options' on options list.
 *
 * @return array List of all options.
 */
function get_alloptions() {
        global $wpdb;
        $show = $wpdb->hide_errors();
        if ( !$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
                $options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
        $wpdb->show_errors($show);

        foreach ( (array) $options as $option ) {
                // "When trying to design a foolproof system,
                //  never underestimate the ingenuity of the fools :)" -- Dougal
                if ( in_array( $option->option_name, array( 'siteurl', 'home', 'category_base', 'tag_base' ) ) )
                        $option->option_value = untrailingslashit( $option->option_value );
                $value = maybe_unserialize( $option->option_value );
                $all_options->{$option->option_name} = apply_filters( 'pre_option_' . $option->option_name, $value );
        }
        return apply_filters( 'all_options', $all_options );
}

/**
 * Loads and caches all autoloaded options, if available or all options.
 *
 * This is different from get_alloptions(), in that this function will cache the
 * options and will return the cached options when called again.
 *
 * @since 2.2.0
 * @package WordPress
 * @subpackage Option
 *
 * @return array List all options.
 */
function wp_load_alloptions() {
        global $wpdb;

        $alloptions = wp_cache_get( 'alloptions', 'options' );

        if ( !$alloptions ) {
                $suppress = $wpdb->suppress_errors();
                if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
                        $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
                $wpdb->suppress_errors($suppress);
                $alloptions = array();
                foreach ( (array) $alloptions_db as $o )
                        $alloptions[$o->option_name] = $o->option_value;
                wp_cache_add( 'alloptions', $alloptions, 'options' );
        }
        return $alloptions;
}

/**
 * Update the value of an option that was already added.
 *
 * You do not need to serialize values, if the value needs to be serialize, then
 * it will be serialized before it is inserted into the database. Remember,
 * resources can not be serialized or added as an option.
 *
 * If the option does not exist, then the option will be added with the option
 * value, but you will not be able to set whether it is autoloaded. If you want
 * to set whether an option autoloaded, then you need to use the add_option().
 *
 * Before the option is updated, then the filter named
 * 'pre_update_option_$option', with the $option as the $option parameter value,
 * will be called. The hook should accept two parameters, the first is the new
 * and the second is the old value.  Whatever is returned will be used as the new
 * value.
 *
 * After the value has been updated the action named 'update_option_$option'
 * will be called.  This action receives two parameters the first being the old
 * value and the second the new value.
 *
 * @since 1.0.0
 * @package WordPress
 * @subpackage Option
 * @uses apply_filters() calls 'pre_update_option_$option' to allow overwriting
 *   the option value in a plugin.
 *
 * @param string $option Option name. Expected to not be SQL-escaped
 * @param mixed $value Option value.
 * @return bool False if value was not updated and true if value was updated.
 */
function update_option( $option, $value ) {
        global $wpdb;

        wp_protect_special_option( $option );

        $safe_option = esc_sql( $option );
        $new_value   = sanitize_option( $option, $value );
        $old_value   = get_option( $safe_option );
        $new_value   = apply_filters( 'pre_update_option_' . $option, $new_value, $old_value );

        // If the new and old values are the same, no need to update.
        if ( $new_value === $old_value )
                return false;

        if ( false === $old_value )
                return add_option( $option, $new_value );

        $notoptions = wp_cache_get( 'notoptions', 'options' );
        if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
                unset( $notoptions[$option] );
                wp_cache_set( 'notoptions', $notoptions, 'options' );
        }

        $_new_value = $new_value;
        $new_value  = maybe_serialize( $new_value );

        do_action( 'update_option', $option, $old_value, $new_value );
        $alloptions = wp_load_alloptions();
        if ( isset( $alloptions[$option] ) ) {
                $alloptions[$option] = $new_value;
                wp_cache_set( 'alloptions', $alloptions, 'options' );
        } else {
                wp_cache_set( $option, $new_value, 'options' );
        }

        $wpdb->update($wpdb->options, array('option_value' => $new_value), array('option_name' => $option) );

        if ( $wpdb->rows_affected == 1 ) {
                do_action( "update_option_{$option}", $old_value, $_new_value );
                do_action( 'updated_option', $option, $old_value, $_new_value );
                return true;
        }
        return false;
}

/**
 * Add a new option.
 *
 * You do not need to serialize values. If the value needs to be serialized, then
 * it will be serialized before it is inserted into the database. Remember,
 * resources can not be serialized or added as an option.
 *
 * You can create options without values and then add values later. Does not
 * check whether the option has already been added, but does check that you
 * aren't adding a protected WordPress option. Care should be taken to not name
 * options, the same as the ones which are protected and to not add options
 * that were already added.
 *
 * The filter named 'add_option_$option', with the $option being
 * replaced with the option's name, will be called. The hook should accept two
 * parameters, the first is the option name, and the second is the value.
 *
 * @package WordPress
 * @subpackage Option
 * @since 1.0.0
 * @link http://alex.vort-x.net/blog/ Thanks Alex Stapleton
 * @uses apply_filters() Calls 'pre_add_option_$option' to allow overwriting
 *   the option value in a plugin.
 *
 * @param string $option Name of option to add. Expects to not be SQL escaped.
 * @param mixed $value Optional. Option value, can be anything.
 * @param mixed $deprecated Optional. Description. Not used anymore.
 * @param bool $autoload Optional. Whether to load the option when WordPress starts up. Default is enabled.
 * @return bool False if option was not added and true if option was added.
 */
function add_option( $option, $value = '', $deprecated = '', $autoload = true ) {
        global $wpdb;

        wp_protect_special_option( $option );
        $safe_name = esc_sql( $option );

        $value = sanitize_option( $option, $value );
        $value = apply_filters( 'pre_add_option_' . $option, $value );

        // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
        $notoptions = wp_cache_get( 'notoptions', 'options' );
        if ( !is_array( $notoptions ) || !isset( $notoptions[$option] ) )
                if ( false !== get_option( $safe_name ) )
                        return false;

        $value = maybe_serialize( $value );
        $autoload = ( $autoload && 'no' != $autoload ) ? true : false;
        do_action( 'add_option', $option, $value );
        if ( $autoload ) {
                $alloptions = wp_load_alloptions();
                $alloptions[$option] = $value;
                wp_cache_set( 'alloptions', $alloptions, 'options' );
        } else {
                wp_cache_set( $option, $value, 'options' );
        }

        // This option exists now
        $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh
        if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
                unset( $notoptions[$option] );
                wp_cache_set( 'notoptions', $notoptions, 'options' );
        }

        $wpdb->insert($wpdb->options, array('option_name' => $option, 'option_value' => $value, 'autoload' => ( $autoload ) ? 'yes' : 'no' ) );

        do_action( "add_option_{$option}", $option, $value );
        do_action( 'added_option', $option, $value );
        
        return true;
}

/**
 * Removes option by name. Prevents removal of protected WordPress options.
 *
 * @package WordPress
 * @subpackage Option
 * @since 1.2.0
 *
 * @param string $option Name of option to remove. Expected to be SQL-escaped.
 * @return bool True, if succeed. False, if failure.
 */
function delete_option( $option ) {
        global $wpdb;

        wp_protect_special_option( $option );

        // Get the ID, if no ID then return
        // expected_slashed ($name)
        $option = $wpdb->get_row( "SELECT autoload FROM $wpdb->options WHERE option_name = '$option'" );
        if ( is_null($option) )
                return false;
        do_action( 'delete_option', $option );
        // expected_slashed ($name)
        $wpdb->query( "DELETE FROM $wpdb->options WHERE option_name = '$option'" );
        if ( 'yes' == $option->autoload ) {
                $alloptions = wp_load_alloptions();
                if ( isset( $alloptions[$option] ) ) {
                        unset( $alloptions[$option] );
                        wp_cache_set( 'alloptions', $alloptions, 'options' );
                }
        } else {
                wp_cache_delete( $option, 'options' );
        }
        do_action( "delete_option_{$option}", $option );
        do_action( 'deleted_option', $option );
        return true;
}

/**
 * Delete a transient
 *
 * @since 2.8.0
 * @package WordPress
 * @subpackage Transient
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @return bool true if successful, false otherwise
 */
function delete_transient($transient) {
        global $_wp_using_ext_object_cache;

        $_transient = $transient;
        do_action( 'delete_transient', $transient );
        if ( $_wp_using_ext_object_cache ) {
                $result = wp_cache_delete( $transient, 'transient' );
        } else {
                $result = delete_option( '_transient_' . esc_sql( $transient ) );
        }

        if ( $result ) {
                do_action( "delete_transient_{$transient}", $transient );
                do_action( 'deleted_transient', $transient );
        }
        return $result;
}

/**
 * Get the value of a transient
 *
 * If the transient does not exist or does not have a value, then the return value
 * will be false.
 *
 * @since 2.8.0
 * @package WordPress
 * @subpackage Transient
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @return mixed Value of transient
 */
function get_transient($transient) {
        global $_wp_using_ext_object_cache;

        $pre = apply_filters( 'pre_transient_' . $transient, null );
        if ( null !== $pre )
                return $pre;

        if ( $_wp_using_ext_object_cache ) {
                $value = wp_cache_get($transient, 'transient');
        } else {
                $safe_transient = esc_sql( $transient );
                $transient_option = '_transient_' . $safe_transient;
                // If option is not in alloptions, it is not autoloaded and thus has a timeout
                $alloptions = wp_load_alloptions();
                if ( !isset( $alloptions[$transient_option] ) ) {
                        $transient_timeout = '_transient_timeout_' . $safe_transient;
                        if ( get_option( $transient_timeout ) < time() ) {
                                delete_option( $transient_option  );
                                delete_option( $transient_timeout );
                                return false;
                        }
                }

                $value = get_option( $transient_option );
        }

        return apply_filters('transient_' . $transient, $value);
}

/**
 * Set/update the value of a transient
 *
 * You do not need to serialize values, if the value needs to be serialize, then
 * it will be serialized before it is set.
 *
 * @since 2.8.0
 * @package WordPress
 * @subpackage Transient
 * @uses apply_filters() Calls 'pre_set_transient_$transient' null to allow overwriting
 *              the transient value in a plugin.
 * @uses apply_filters() Calls 'pre_set_transient_expiration_$transient' null to allow overwriting
 *              the transient expiration in a plugin.
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @param mixed $value Transient value.
 * @param int $expiration Time until expiration in seconds, default 0
 * @return bool False if value was not set and true if value was set.
 */
function set_transient($transient, $value, $expiration = 0) {
        global $_wp_using_ext_object_cache;

        $value = apply_filters( 'pre_set_transient_' . $transient, $value, $expiration );
        $expiration = apply_filters( 'pre_set_transient_expiration_' . $transient, $expiration, $value );

        do_action( 'set_transient', $transient, $value, $expiration );
        if ( $_wp_using_ext_object_cache ) {
                $result = wp_cache_set($transient, $value, 'transient', $expiration);
        } else {
                $transient_timeout = '_transient_timeout_' . $transient;
                $transient = '_transient_' . $transient;
                $safe_transient = esc_sql($transient);
                if ( false === get_option( $safe_transient ) ) {
                        $autoload = 'yes';
                        if ( 0 != $expiration ) {
                                $autoload = 'no';
                                add_option( $transient_timeout, time() + $expiration, '', 'no' );
                        }
                        $result = add_option( $transient, $value, '', $autoload );
                } else {
                        if ( 0 != $expiration )
                                update_option( $transient_timeout, time() + $expiration );
                        $result = update_option( $transient, $value );
                }
        }
        if ( $result ) {
                do_action( "set_transient_{$transient}", $transient, $value, $expiration );
                do_action( 'setted_transient', $transient, $value, $expiration );
        }
        return $result;
}

/**
 * Saves and restores user interface settings stored in a cookie.
 *
 * Checks if the current user-settings cookie is updated and stores it. When no
 * cookie exists (different browser used), adds the last saved cookie restoring
 * the settings.
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.7.0
 */
function wp_user_settings() {

        if ( ! is_admin() )
                return;

        if ( defined('DOING_AJAX') )
                return;

        if ( ! $user = wp_get_current_user() )
                return;

        $settings = get_user_option( 'user-settings', $user->ID, false );

        if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) {
                $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );

                if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) {
                        if ( $cookie == $settings )
                                return;

                        $last_time = (int) get_user_option( 'user-settings-time', $user->ID, false );
                        $saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0;

                        if ( $saved > $last_time ) {
                                update_user_option( $user->ID, 'user-settings', $cookie, false );
                                update_user_option( $user->ID, 'user-settings-time', time() - 5, false );
                                return;
                        }
                }
        }

        setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH );
        setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH );
        $_COOKIE['wp-settings-' . $user->ID] = $settings;
}

/**
 * Retrieve user interface setting value based on setting name.
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.7.0
 *
 * @param string $name The name of the setting.
 * @param string $default Optional default value to return when $name is not set.
 * @return mixed the last saved user setting or the default value/false if it doesn't exist.
 */
function get_user_setting( $name, $default = false ) {

        $all = get_all_user_settings();

        return isset($all[$name]) ? $all[$name] : $default;
}

/**
 * Add or update user interface setting.
 *
 * Both $name and $value can contain only ASCII letters, numbers and underscores.
 * This function has to be used before any output has started as it calls setcookie().
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.8.0
 *
 * @param string $name The name of the setting.
 * @param string $value The value for the setting.
 * @return bool true if set successfully/false if not.
 */
function set_user_setting( $name, $value ) {

        if ( headers_sent() )
                return false;

        $all = get_all_user_settings();
        $name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name );

        if ( empty($name) )
                return false;

        $all[$name] = $value;

        return wp_set_all_user_settings($all);
}

/**
 * Delete user interface settings.
 *
 * Deleting settings would reset them to the defaults.
 * This function has to be used before any output has started as it calls setcookie().
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.7.0
 *
 * @param mixed $names The name or array of names of the setting to be deleted.
 * @return bool true if deleted successfully/false if not.
 */
function delete_user_setting( $names ) {

        if ( headers_sent() )
                return false;

        $all = get_all_user_settings();
        $names = (array) $names;

        foreach ( $names as $name ) {
                if ( isset($all[$name]) ) {
                        unset($all[$name]);
                        $deleted = true;
                }
        }

        if ( isset($deleted) )
                return wp_set_all_user_settings($all);

        return false;
}

/**
 * Retrieve all user interface settings.
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.7.0
 *
 * @return array the last saved user settings or empty array.
 */
function get_all_user_settings() {
        global $_updated_user_settings;

        if ( ! $user = wp_get_current_user() )
                return array();

        if ( isset($_updated_user_settings) && is_array($_updated_user_settings) )
                return $_updated_user_settings;

        $all = array();
        if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) {
                $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );

                if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char
                        parse_str($cookie, $all);

        } else {
                $option = get_user_option('user-settings', $user->ID);
                if ( $option && is_string($option) )
                        parse_str( $option, $all );
        }

        return $all;
}

/**
 * Private. Set all user interface settings.
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.8.0
 *
 */
function wp_set_all_user_settings($all) {
        global $_updated_user_settings;

        if ( ! $user = wp_get_current_user() )
                return false;

        $_updated_user_settings = $all;
        $settings = '';
        foreach ( $all as $k => $v ) {
                $v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v );
                $settings .= $k . '=' . $v . '&';
        }

        $settings = rtrim($settings, '&');

        update_user_option( $user->ID, 'user-settings', $settings, false );
        update_user_option( $user->ID, 'user-settings-time', time(), false );

        return true;
}

/**
 * Delete the user settings of the current user.
 *
 * @package WordPress
 * @subpackage Option
 * @since 2.7.0
 */
function delete_all_user_settings() {
        if ( ! $user = wp_get_current_user() )
                return;

        update_user_option( $user->ID, 'user-settings', '', false );
        setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH);
}

/**
 * Serialize data, if needed.
 *
 * @since 2.0.5
 *
 * @param mixed $data Data that might be serialized.
 * @return mixed A scalar data
 */
function maybe_serialize( $data ) {
        if ( is_array( $data ) || is_object( $data ) )
                return serialize( $data );

        if ( is_serialized( $data ) )
                return serialize( $data );

        return $data;
}

/**
 * Retrieve post title from XMLRPC XML.
 *
 * If the title element is not part of the XML, then the default post title from
 * the $post_default_title will be used instead.
 *
 * @package WordPress
 * @subpackage XMLRPC
 * @since 0.71
 *
 * @global string $post_default_title Default XMLRPC post title.
 *
 * @param string $content XMLRPC XML Request content
 * @return string Post title
 */
function xmlrpc_getposttitle( $content ) {
        global $post_default_title;
        if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
                $post_title = $matchtitle[1];
        } else {
                $post_title = $post_default_title;
        }
        return $post_title;
}

/**
 * Retrieve the post category or categories from XMLRPC XML.
 *
 * If the category element is not found, then the default post category will be
 * used. The return type then would be what $post_default_category. If the
 * category is found, then it will always be an array.
 *
 * @package WordPress
 * @subpackage XMLRPC
 * @since 0.71
 *
 * @global string $post_default_category Default XMLRPC post category.
 *
 * @param string $content XMLRPC XML Request content
 * @return string|array List of categories or category name.
 */
function xmlrpc_getpostcategory( $content ) {
        global $post_default_category;
        if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
                $post_category = trim( $matchcat[1], ',' );
                $post_category = explode( ',', $post_category );
        } else {
                $post_category = $post_default_category;
        }
        return $post_category;
}

/**
 * XMLRPC XML content without title and category elements.
 *
 * @package WordPress
 * @subpackage XMLRPC
 * @since 0.71
 *
 * @param string $content XMLRPC XML Request content
 * @return string XMLRPC XML Request content without title and category elements.
 */
function xmlrpc_removepostdata( $content ) {
        $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
        $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
        $content = trim( $content );
        return $content;
}

/**
 * Open the file handle for debugging.
 *
 * This function is used for XMLRPC feature, but it is general purpose enough
 * to be used in anywhere.
 *
 * @see fopen() for mode options.
 * @package WordPress
 * @subpackage Debug
 * @since 0.71
 * @uses $debug Used for whether debugging is enabled.
 *
 * @param string $filename File path to debug file.
 * @param string $mode Same as fopen() mode parameter.
 * @return bool|resource File handle. False on failure.
 */
function debug_fopen( $filename, $mode ) {
        global $debug;
        if ( 1 == $debug ) {
                $fp = fopen( $filename, $mode );
                return $fp;
        } else {
                return false;
        }
}

/**
 * Write contents to the file used for debugging.
 *
 * Technically, this can be used to write to any file handle when the global
 * $debug is set to 1 or true.
 *
 * @package WordPress
 * @subpackage Debug
 * @since 0.71
 * @uses $debug Used for whether debugging is enabled.
 *
 * @param resource $fp File handle for debugging file.
 * @param string $string Content to write to debug file.
 */
function debug_fwrite( $fp, $string ) {
        global $debug;
        if ( 1 == $debug )
                fwrite( $fp, $string );
}

/**
 * Close the debugging file handle.
 *
 * Technically, this can be used to close any file handle when the global $debug
 * is set to 1 or true.
 *
 * @package WordPress
 * @subpackage Debug
 * @since 0.71
 * @uses $debug Used for whether debugging is enabled.
 *
 * @param resource $fp Debug File handle.
 */
function debug_fclose( $fp ) {
        global $debug;
        if ( 1 == $debug )
                fclose( $fp );
}

/**
 * Check content for video and audio links to add as enclosures.
 *
 * Will not add enclosures that have already been added and will
 * remove enclosures that are no longer in the post. This is called as
 * pingbacks and trackbacks.
 *
 * @package WordPress
 * @since 1.5.0
 *
 * @uses $wpdb
 *
 * @param string $content Post Content
 * @param int $post_ID Post ID
 */
function do_enclose( $content, $post_ID ) {
        global $wpdb;
        include_once( ABSPATH . WPINC . '/class-IXR.php' );

        $log = debug_fopen( ABSPATH . 'enclosures.log', 'a' );
        $post_links = array();
        debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" );

        $pung = get_enclosed( $post_ID );

        $ltrs = '\w';
        $gunk = '/#~:.?+=&%@!\-';
        $punc = '.:?\-';
        $any = $ltrs . $gunk . $punc;

        preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp );

        debug_fwrite( $log, 'Post contents:' );
        debug_fwrite( $log, $content . "\n" );

        foreach ( $pung as $link_test ) {
                if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
                        $mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') );
                        do_action( 'delete_postmeta', $mid );
                        $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id IN(%s)", implode( ',', $mid ) ) );
                        do_action( 'deleted_postmeta', $mid );
                }
        }

        foreach ( (array) $post_links_temp[0] as $link_test ) {
                if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
                        $test = parse_url( $link_test );
                        if ( isset( $test['query'] ) )
                                $post_links[] = $link_test;
                        elseif ( $test['path'] != '/' && $test['path'] != '' )
                                $post_links[] = $link_test;
                }
        }

        foreach ( (array) $post_links as $url ) {
                if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $url . '%' ) ) ) {
                        if ( $headers = wp_get_http_headers( $url) ) {
                                $len = (int) $headers['content-length'];
                                $type = $headers['content-type'];
                                $allowed_types = array( 'video', 'audio' );
                                if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
                                        $meta_value = "$url\n$len\n$type\n";
                                        $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) );
                                        do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value );
                                }
                        }
                }
        }
}

/**
 * Perform a HTTP HEAD or GET request.
 *
 * If $file_path is a writable filename, this will do a GET request and write
 * the file to that path.
 *
 * @since 2.5.0
 *
 * @param string $url URL to fetch.
 * @param string|bool $file_path Optional. File path to write request to.
 * @param bool $deprecated Deprecated. Not used.
 * @return bool|string False on failure and string of headers if HEAD request.
 */
function wp_get_http( $url, $file_path = false, $deprecated = false ) {
        @set_time_limit( 60 );

        $options = array();
        $options['redirection'] = 5;

        if ( false == $file_path )
                $options['method'] = 'HEAD';
        else
                $options['method'] = 'GET';

        $response = wp_remote_request($url, $options);

        if ( is_wp_error( $response ) )
                return false;

        $headers = wp_remote_retrieve_headers( $response );
        $headers['response'] = $response['response']['code'];

        if ( false == $file_path )
                return $headers;

        // GET request - write it to the supplied filename
        $out_fp = fopen($file_path, 'w');
        if ( !$out_fp )
                return $headers;

        fwrite( $out_fp,  $response['body']);
        fclose($out_fp);

        return $headers;
}

/**
 * Retrieve HTTP Headers from URL.
 *
 * @since 1.5.1
 *
 * @param string $url
 * @param bool $deprecated Not Used.
 * @return bool|string False on failure, headers on success.
 */
function wp_get_http_headers( $url, $deprecated = false ) {
        $response = wp_remote_head( $url );

        if ( is_wp_error( $response ) )
                return false;

        return wp_remote_retrieve_headers( $response );
}

/**
 * Whether today is a new day.
 *
 * @since 0.71
 * @uses $day Today
 * @uses $previousday Previous day
 *
 * @return int 1 when new day, 0 if not a new day.
 */
function is_new_day() {
        global $day, $previousday;
        if ( $day != $previousday )
                return 1;
        else
                return 0;
}

/**
 * Build URL query based on an associative and, or indexed array.
 *
 * This is a convenient function for easily building url queries. It sets the
 * separator to '&' and uses _http_build_query() function.
 *
 * @see _http_build_query() Used to build the query
 * @link http://us2.php.net/manual/en/function.http-build-query.php more on what
 *              http_build_query() does.
 *
 * @since 2.3.0
 *
 * @param array $data URL-encode key/value pairs.
 * @return string URL encoded string
 */
function build_query( $data ) {
        return _http_build_query( $data, null, '&', '', false );
}

/**
 * Retrieve a modified URL query string.
 *
 * You can rebuild the URL and append a new query variable to the URL query by
 * using this function. You can also retrieve the full URL with query data.
 *
 * Adding a single key & value or an associative array. Setting a key value to
 * emptystring removes the key. Omitting oldquery_or_uri uses the $_SERVER
 * value.
 *
 * @since 1.5.0
 *
 * @param mixed $param1 Either newkey or an associative_array
 * @param mixed $param2 Either newvalue or oldquery or uri
 * @param mixed $param3 Optional. Old query or uri
 * @return string New URL query string.
 */
function add_query_arg() {
        $ret = '';
        if ( is_array( func_get_arg(0) ) ) {
                if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
                        $uri = $_SERVER['REQUEST_URI'];
                else
                        $uri = @func_get_arg( 1 );
        } else {
                if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
                        $uri = $_SERVER['REQUEST_URI'];
                else
                        $uri = @func_get_arg( 2 );
        }

        if ( $frag = strstr( $uri, '#' ) )
                $uri = substr( $uri, 0, -strlen( $frag ) );
        else
                $frag = '';

        if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
                $protocol = $matches[0];
                $uri = substr( $uri, strlen( $protocol ) );
        } else {
                $protocol = '';
        }

        if ( strpos( $uri, '?' ) !== false ) {
                $parts = explode( '?', $uri, 2 );
                if ( 1 == count( $parts ) ) {
                        $base = '?';
                        $query = $parts[0];
                } else {
                        $base = $parts[0] . '?';
                        $query = $parts[1];
                }
        } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
                $base = $uri . '?';
                $query = '';
        } else {
                $base = '';
                $query = $uri;
        }

        wp_parse_str( $query, $qs );
        $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
        if ( is_array( func_get_arg( 0 ) ) ) {
                $kayvees = func_get_arg( 0 );
                $qs = array_merge( $qs, $kayvees );
        } else {
                $qs[func_get_arg( 0 )] = func_get_arg( 1 );
        }

        foreach ( (array) $qs as $k => $v ) {
                if ( $v === false )
                        unset( $qs[$k] );
        }

        $ret = build_query( $qs );
        $ret = trim( $ret, '?' );
        $ret = preg_replace( '#=(&|$)#', '$1', $ret );
        $ret = $protocol . $base . $ret . $frag;
        $ret = rtrim( $ret, '?' );
        return $ret;
}

/**
 * Removes an item or list from the query string.
 *
 * @since 1.5.0
 *
 * @param string|array $key Query key or keys to remove.
 * @param bool $query When false uses the $_SERVER value.
 * @return string New URL query string.
 */
function remove_query_arg( $key, $query=false ) {
        if ( is_array( $key ) ) { // removing multiple keys
                foreach ( $key as $k )
                        $query = add_query_arg( $k, false, $query );
                return $query;
        }
        return add_query_arg( $key, false, $query );
}

/**
 * Walks the array while sanitizing the contents.
 *
 * @uses $wpdb Used to sanitize values
 * @since 0.71
 *
 * @param array $array Array to used to walk while sanitizing contents.
 * @return array Sanitized $array.
 */
function add_magic_quotes( $array ) {
        global $wpdb;

        foreach ( (array) $array as $k => $v ) {
                if ( is_array( $v ) ) {
                        $array[$k] = add_magic_quotes( $v );
                } else {
                        $array[$k] = esc_sql( $v );
                }
        }
        return $array;
}

/**
 * HTTP request for URI to retrieve content.
 *
 * @since 1.5.1
 * @uses wp_remote_get()
 *
 * @param string $uri URI/URL of web page to retrieve.
 * @return bool|string HTTP content. False on failure.
 */
function wp_remote_fopen( $uri ) {
        $parsed_url = @parse_url( $uri );

        if ( !$parsed_url || !is_array( $parsed_url ) )
                return false;

        $options = array();
        $options['timeout'] = 10;

        $response = wp_remote_get( $uri, $options );

        if ( is_wp_error( $response ) )
                return false;

        return $response['body'];
}

/**
 * Setup the WordPress query.
 *
 * @since 2.0.0
 *
 * @param string $query_vars Default WP_Query arguments.
 */
function wp( $query_vars = '' ) {
        global $wp, $wp_query, $wp_the_query;
        $wp->main( $query_vars );

        if( !isset($wp_the_query) )
                $wp_the_query = $wp_query;
}

/**
 * Retrieve the description for the HTTP status.
 *
 * @since 2.3.0
 *
 * @param int $code HTTP status code.
 * @return string Empty string if not found, or description if found.
 */
function get_status_header_desc( $code ) {
        global $wp_header_to_desc;

        $code = absint( $code );

        if ( !isset( $wp_header_to_desc ) ) {
                $wp_header_to_desc = array(
                        100 => 'Continue',
                        101 => 'Switching Protocols',
                        102 => 'Processing',

                        200 => 'OK',
                        201 => 'Created',
                        202 => 'Accepted',
                        203 => 'Non-Authoritative Information',
                        204 => 'No Content',
                        205 => 'Reset Content',
                        206 => 'Partial Content',
                        207 => 'Multi-Status',
                        226 => 'IM Used',

                        300 => 'Multiple Choices',
                        301 => 'Moved Permanently',
                        302 => 'Found',
                        303 => 'See Other',
                        304 => 'Not Modified',
                        305 => 'Use Proxy',
                        306 => 'Reserved',
                        307 => 'Temporary Redirect',

                        400 => 'Bad Request',
                        401 => 'Unauthorized',
                        402 => 'Payment Required',
                        403 => 'Forbidden',
                        404 => 'Not Found',
                        405 => 'Method Not Allowed',
                        406 => 'Not Acceptable',
                        407 => 'Proxy Authentication Required',
                        408 => 'Request Timeout',
                        409 => 'Conflict',
                        410 => 'Gone',
                        411 => 'Length Required',
                        412 => 'Precondition Failed',
                        413 => 'Request Entity Too Large',
                        414 => 'Request-URI Too Long',
                        415 => 'Unsupported Media Type',
                        416 => 'Requested Range Not Satisfiable',
                        417 => 'Expectation Failed',
                        422 => 'Unprocessable Entity',
                        423 => 'Locked',
                        424 => 'Failed Dependency',
                        426 => 'Upgrade Required',

                        500 => 'Internal Server Error',
                        501 => 'Not Implemented',
                        502 => 'Bad Gateway',
                        503 => 'Service Unavailable',
                        504 => 'Gateway Timeout',
                        505 => 'HTTP Version Not Supported',
                        506 => 'Variant Also Negotiates',
                        507 => 'Insufficient Storage',
                        510 => 'Not Extended'
                );
        }

        if ( isset( $wp_header_to_desc[$code] ) )
                return $wp_header_to_desc[$code];
        else
                return '';
}

/**
 * Set HTTP status header.
 *
 * @since 2.0.0
 * @uses apply_filters() Calls 'status_header' on status header string, HTTP
 *              HTTP code, HTTP code description, and protocol string as separate
 *              parameters.
 *
 * @param int $header HTTP status code
 * @return null Does not return anything.
 */
function status_header( $header ) {
        $text = get_status_header_desc( $header );

        if ( empty( $text ) )
                return false;

        $protocol = $_SERVER["SERVER_PROTOCOL"];
        if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
                $protocol = 'HTTP/1.0';
        $status_header = "$protocol $header $text";
        if ( function_exists( 'apply_filters' ) )
                $status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol );

        return @header( $status_header, true, $header );
}

/**
 * Gets the header information to prevent caching.
 *
 * The several different headers cover the different ways cache prevention is handled
 * by different browsers
 *
 * @since 2.8
 *
 * @uses apply_filters()
 * @return array The associative array of header names and field values.
 */
function wp_get_nocache_headers() {
        $headers = array(
                'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
                'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
                'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
                'Pragma' => 'no-cache',
        );

        if ( function_exists('apply_filters') ) {
                $headers = apply_filters('nocache_headers', $headers);
        }
        return $headers;
}

/**
 * Sets the headers to prevent caching for the different browsers.
 *
 * Different browsers support different nocache headers, so several headers must
 * be sent so that all of them get the point that no caching should occur.
 *
 * @since 2.0.0
 * @uses wp_get_nocache_headers()
 */
function nocache_headers() {
        $headers = wp_get_nocache_headers();
        foreach( (array) $headers as $name => $field_value )
                @header("{$name}: {$field_value}");
}

/**
 * Set the headers for caching for 10 days with JavaScript content type.
 *
 * @since 2.1.0
 */
function cache_javascript_headers() {
        $expiresOffset = 864000; // 10 days
        header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
        header( "Vary: Accept-Encoding" ); // Handle proxies
        header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
}

/**
 * Retrieve the number of database queries during the WordPress execution.
 *
 * @since 2.0.0
 *
 * @return int Number of database queries
 */
function get_num_queries() {
        global $wpdb;
        return $wpdb->num_queries;
}

/**
 * Whether input is yes or no. Must be 'y' to be true.
 *
 * @since 1.0.0
 *
 * @param string $yn Character string containing either 'y' or 'n'
 * @return bool True if yes, false on anything else
 */
function bool_from_yn( $yn ) {
        return ( strtolower( $yn ) == 'y' );
}

/**
 * Loads the feed template from the use of an action hook.
 *
 * If the feed action does not have a hook, then the function will die with a
 * message telling the visitor that the feed is not valid.
 *
 * It is better to only have one hook for each feed.
 *
 * @since 2.1.0
 * @uses $wp_query Used to tell if the use a comment feed.
 * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed.
 */
function do_feed() {
        global $wp_query;

        $feed = get_query_var( 'feed' );

        // Remove the pad, if present.
        $feed = preg_replace( '/^_+/', '', $feed );

        if ( $feed == '' || $feed == 'feed' )
                $feed = get_default_feed();

        $hook = 'do_feed_' . $feed;
        if ( !has_action($hook) ) {
                $message = sprintf( __( 'ERROR: %s is not a valid feed template' ), esc_html($feed));
                wp_die($message);
        }

        do_action( $hook, $wp_query->is_comment_feed );
}

/**
 * Load the RDF RSS 0.91 Feed template.
 *
 * @since 2.1.0
 */
function do_feed_rdf() {
        load_template( ABSPATH . WPINC . '/feed-rdf.php' );
}

/**
 * Load the RSS 1.0 Feed Template
 *
 * @since 2.1.0
 */
function do_feed_rss() {
        load_template( ABSPATH . WPINC . '/feed-rss.php' );
}

/**
 * Load either the RSS2 comment feed or the RSS2 posts feed.
 *
 * @since 2.1.0
 *
 * @param bool $for_comments True for the comment feed, false for normal feed.
 */
function do_feed_rss2( $for_comments ) {
        if ( $for_comments )
                load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
        else
                load_template( ABSPATH . WPINC . '/feed-rss2.php' );
}

/**
 * Load either Atom comment feed or Atom posts feed.
 *
 * @since 2.1.0
 *
 * @param bool $for_comments True for the comment feed, false for normal feed.
 */
function do_feed_atom( $for_comments ) {
        if ($for_comments)
                load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
        else
                load_template( ABSPATH . WPINC . '/feed-atom.php' );
}

/**
 * Display the robot.txt file content.
 *
 * The echo content should be with usage of the permalinks or for creating the
 * robot.txt file.
 *
 * @since 2.1.0
 * @uses do_action() Calls 'do_robotstxt' hook for displaying robot.txt rules.
 */
function do_robots() {
        header( 'Content-Type: text/plain; charset=utf-8' );

        do_action( 'do_robotstxt' );

        if ( '0' == get_option( 'blog_public' ) ) {
                echo "User-agent: *\n";
                echo "Disallow: /\n";
        } else {
                echo "User-agent: *\n";
                echo "Disallow:\n";
        }
}

/**
 * Test whether blog is already installed.
 *
 * The cache will be checked first. If you have a cache plugin, which saves the
 * cache values, then this will work. If you use the default WordPress cache,
 * and the database goes away, then you might have problems.
 *
 * Checks for the option siteurl for whether WordPress is installed.
 *
 * @since 2.1.0
 * @uses $wpdb
 *
 * @return bool Whether blog is already installed.
 */
function is_blog_installed() {
        global $wpdb;

        // Check cache first. If options table goes away and we have true cached, oh well.
        if ( wp_cache_get( 'is_blog_installed' ) )
                return true;

        $suppress = $wpdb->suppress_errors();
        $alloptions = wp_load_alloptions();
        // If siteurl is not set to autoload, check it specifically
        if ( !isset( $alloptions['siteurl'] ) )
                $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
        else
                $installed = $alloptions['siteurl'];
        $wpdb->suppress_errors( $suppress );

        $installed = !empty( $installed );
        wp_cache_set( 'is_blog_installed', $installed );

        if ( $installed )
                return true;

        $suppress = $wpdb->suppress_errors();
        $tables = $wpdb->get_col('SHOW TABLES');
        $wpdb->suppress_errors( $suppress );

        // Loop over the WP tables.  If none exist, then scratch install is allowed.
        // If one or more exist, suggest table repair since we got here because the options
        // table could not be accessed.
        foreach ($wpdb->tables as $table) {
                // If one of the WP tables exist, then we are in an insane state.
                if ( in_array($wpdb->prefix . $table, $tables) ) {
                        // If visiting repair.php, return true and let it take over.
                        if ( defined('WP_REPAIRING') )
                                return true;
                        // Die with a DB error.
                        $wpdb->error = __('One or more database tables are unavailable.  The database may need to be <a href="maint/repair.php?referrer=is_blog_installed">repaired</a>.');
                        dead_db();
                }
        }

        wp_cache_set( 'is_blog_installed', false );

        return false;
}

/**
 * Retrieve URL with nonce added to URL query.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param string $actionurl URL to add nonce action
 * @param string $action Optional. Nonce action name
 * @return string URL with nonce action added.
 */
function wp_nonce_url( $actionurl, $action = -1 ) {
        $actionurl = str_replace( '&amp;', '&', $actionurl );
        return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) );
}

/**
 * Retrieve or display nonce hidden field for forms.
 *
 * The nonce field is used to validate that the contents of the form came from
 * the location on the current site and not somewhere else. The nonce does not
 * offer absolute protection, but should protect against most cases. It is very
 * important to use nonce field in forms.
 *
 * If you set $echo to true and set $referer to true, then you will need to
 * retrieve the {@link wp_referer_field() wp referer field}. If you have the
 * $referer set to true and are echoing the nonce field, it will also echo the
 * referer field.
 *
 * The $action and $name are optional, but if you want to have better security,
 * it is strongly suggested to set those two parameters. It is easier to just
 * call the function without any parameters, because validation of the nonce
 * doesn't require any parameters, but since crackers know what the default is
 * it won't be difficult for them to find a way around your nonce and cause
 * damage.
 *
 * The input name will be whatever $name value you gave. The input value will be
 * the nonce creation value.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param string $action Optional. Action name.
 * @param string $name Optional. Nonce name.
 * @param bool $referer Optional, default true. Whether to set the referer field for validation.
 * @param bool $echo Optional, default true. Whether to display or return hidden form field.
 * @return string Nonce field.
 */
function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
        $name = esc_attr( $name );
        $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
        if ( $echo )
                echo $nonce_field;

        if ( $referer )
                wp_referer_field( $echo, 'previous' );

        return $nonce_field;
}

/**
 * Retrieve or display referer hidden field for forms.
 *
 * The referer link is the current Request URI from the server super global. The
 * input name is '_wp_http_referer', in case you wanted to check manually.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param bool $echo Whether to echo or return the referer field.
 * @return string Referer field.
 */
function wp_referer_field( $echo = true) {
        $ref = esc_attr( $_SERVER['REQUEST_URI'] );
        $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />';

        if ( $echo )
                echo $referer_field;
        return $referer_field;
}

/**
 * Retrieve or display original referer hidden field for forms.
 *
 * The input name is '_wp_original_http_referer' and will be either the same
 * value of {@link wp_referer_field()}, if that was posted already or it will
 * be the current page, if it doesn't exist.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param bool $echo Whether to echo the original http referer
 * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to.
 * @return string Original referer field.
 */
function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
        $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI'];
        $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to;
        $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />';
        if ( $echo )
                echo $orig_referer_field;
        return $orig_referer_field;
}

/**
 * Retrieve referer from '_wp_http_referer', HTTP referer, or current page respectively.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @return string|bool False on failure. Referer URL on success.
 */
function wp_get_referer() {
        $ref = '';
        if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
                $ref = $_REQUEST['_wp_http_referer'];
        else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )
                $ref = $_SERVER['HTTP_REFERER'];

        if ( $ref !== $_SERVER['REQUEST_URI'] )
                return $ref;
        return false;
}

/**
 * Retrieve original referer that was posted, if it exists.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @return string|bool False if no original referer or original referer if set.
 */
function wp_get_original_referer() {
        if ( !empty( $_REQUEST['_wp_original_http_referer'] ) )
                return $_REQUEST['_wp_original_http_referer'];
        return false;
}

/**
 * Recursive directory creation based on full path.
 *
 * Will attempt to set permissions on folders.
 *
 * @since 2.0.1
 *
 * @param string $target Full path to attempt to create.
 * @return bool Whether the path was created or not. True if path already exists.
 */
function wp_mkdir_p( $target ) {
        // from php.net/mkdir user contributed notes
        $target = str_replace( '//', '/', $target );
        if ( file_exists( $target ) )
                return @is_dir( $target );

        // Attempting to create the directory may clutter up our display.
        if ( @mkdir( $target ) ) {
                $stat = @stat( dirname( $target ) );
                $dir_perms = $stat['mode'] & 0007777;  // Get the permission bits.
                @chmod( $target, $dir_perms );
                return true;
        } elseif ( is_dir( dirname( $target ) ) ) {
                        return false;
        }

        // If the above failed, attempt to create the parent node, then try again.
        if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) )
                return wp_mkdir_p( $target );

        return false;
}

/**
 * Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows').
 *
 * @since 2.5.0
 *
 * @param string $path File path
 * @return bool True if path is absolute, false is not absolute.
 */
function path_is_absolute( $path ) {
        // this is definitive if true but fails if $path does not exist or contains a symbolic link
        if ( realpath($path) == $path )
                return true;

        if ( strlen($path) == 0 || $path{0} == '.' )
                return false;

        // windows allows absolute paths like this
        if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
                return true;

        // a path starting with / or \ is absolute; anything else is relative
        return (bool) preg_match('#^[/\\\\]#', $path);
}

/**
 * Join two filesystem paths together (e.g. 'give me $path relative to $base').
 *
 * If the $path is absolute, then it the full path is returned.
 *
 * @since 2.5.0
 *
 * @param string $base
 * @param string $path
 * @return string The path with the base or absolute path.
 */
function path_join( $base, $path ) {
        if ( path_is_absolute($path) )
                return $path;

        return rtrim($base, '/') . '/' . ltrim($path, '/');
}

/**
 * Get an array containing the current upload directory's path and url.
 *
 * Checks the 'upload_path' option, which should be from the web root folder,
 * and if it isn't empty it will be used. If it is empty, then the path will be
 * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
 * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
 *
 * The upload URL path is set either by the 'upload_url_path' option or by using
 * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
 *
 * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
 * the administration settings panel), then the time will be used. The format
 * will be year first and then month.
 *
 * If the path couldn't be created, then an error will be returned with the key
 * 'error' containing the error message. The error suggests that the parent
 * directory is not writable by the server.
 *
 * On success, the returned array will have many indices:
 * 'path' - base directory and sub directory or full path to upload directory.
 * 'url' - base url and sub directory or absolute URL to upload directory.
 * 'subdir' - sub directory if uploads use year/month folders option is on.
 * 'basedir' - path without subdir.
 * 'baseurl' - URL path without subdir.
 * 'error' - set to false.
 *
 * @since 2.0.0
 * @uses apply_filters() Calls 'upload_dir' on returned array.
 *
 * @param string $time Optional. Time formatted in 'yyyy/mm'.
 * @return array See above for description.
 */
function wp_upload_dir( $time = null ) {
        $siteurl = get_option( 'siteurl' );
        $upload_path = get_option( 'upload_path' );
        $upload_path = trim($upload_path);
        if ( empty($upload_path) )
                $dir = WP_CONTENT_DIR . '/uploads';
        else
                $dir = $upload_path;

        // $dir is absolute, $path is (maybe) relative to ABSPATH
        $dir = path_join( ABSPATH, $dir );

        if ( !$url = get_option( 'upload_url_path' ) ) {
                if ( empty($upload_path) or ( $upload_path == $dir ) )
                        $url = WP_CONTENT_URL . '/uploads';
                else
                        $url = trailingslashit( $siteurl ) . $upload_path;
        }

        if ( defined('UPLOADS') ) {
                $dir = ABSPATH . UPLOADS;
                $url = trailingslashit( $siteurl ) . UPLOADS;
        }

        $bdir = $dir;
        $burl = $url;

        $subdir = '';
        if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
                // Generate the yearly and monthly dirs
                if ( !$time )
                        $time = current_time( 'mysql' );
                $y = substr( $time, 0, 4 );
                $m = substr( $time, 5, 2 );
                $subdir = "/$y/$m";
        }

        $dir .= $subdir;
        $url .= $subdir;

        $uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) );

        // Make sure we have an uploads dir
        if ( ! wp_mkdir_p( $uploads['path'] ) ) {
                $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] );
                return array( 'error' => $message );
        }

        return $uploads;
}

/**
 * Get a filename that is sanitized and unique for the given directory.
 *
 * If the filename is not unique, then a number will be added to the filename
 * before the extension, and will continue adding numbers until the filename is
 * unique.
 *
 * The callback must accept two parameters, the first one is the directory and
 * the second is the filename. The callback must be a function.
 *
 * @since 2.5
 *
 * @param string $dir
 * @param string $filename
 * @param string $unique_filename_callback Function name, must be a function.
 * @return string New filename, if given wasn't unique.
 */
function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
        // sanitize the file name before we begin processing
        $filename = sanitize_file_name($filename);

        // separate the filename into a name and extension
        $info = pathinfo($filename);
        $ext = !empty($info['extension']) ? '.' . $info['extension'] : '';
        $name = basename($filename, $ext);

        // edge case: if file is named '.ext', treat as an empty name
        if( $name === $ext )
                $name = '';

        // Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
        if ( $unique_filename_callback && function_exists( $unique_filename_callback ) ) {
                $filename = $unique_filename_callback( $dir, $name );
        } else {
                $number = '';

                // change '.ext' to lower case
                if ( $ext && strtolower($ext) != $ext ) {
                        $ext2 = strtolower($ext);
                        $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );

                        // check for both lower and upper case extension or image sub-sizes may be overwritten
                        while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
                                $new_number = $number + 1;
                                $filename = str_replace( "$number$ext", "$new_number$ext", $filename );
                                $filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );
                                $number = $new_number;
                        }
                        return $filename2;
                }

                while ( file_exists( $dir . "/$filename" ) ) {
                        if ( '' == "$number$ext" )
                                $filename = $filename . ++$number . $ext;
                        else
                                $filename = str_replace( "$number$ext", ++$number . $ext, $filename );
                }
        }

        return $filename;
}

/**
 * Create a file in the upload folder with given content.
 *
 * If there is an error, then the key 'error' will exist with the error message.
 * If success, then the key 'file' will have the unique file path, the 'url' key
 * will have the link to the new file. and the 'error' key will be set to false.
 *
 * This function will not move an uploaded file to the upload folder. It will
 * create a new file with the content in $bits parameter. If you move the upload
 * file, read the content of the uploaded file, and then you can give the
 * filename and content to this function, which will add it to the upload
 * folder.
 *
 * The permissions will be set on the new file automatically by this function.
 *
 * @since 2.0.0
 *
 * @param string $name
 * @param null $deprecated Not used. Set to null.
 * @param mixed $bits File content
 * @param string $time Optional. Time formatted in 'yyyy/mm'.
 * @return array
 */
function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
        if ( empty( $name ) )
                return array( 'error' => __( 'Empty filename' ) );

        $wp_filetype = wp_check_filetype( $name );
        if ( !$wp_filetype['ext'] )
                return array( 'error' => __( 'Invalid file type' ) );

        $upload = wp_upload_dir( $time );

        if ( $upload['error'] !== false )
                return $upload;

        $filename = wp_unique_filename( $upload['path'], $name );

        $new_file = $upload['path'] . "/$filename";
        if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
                $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
                return array( 'error' => $message );
        }

        $ifp = @ fopen( $new_file, 'wb' );
        if ( ! $ifp )
                return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );

        @fwrite( $ifp, $bits );
        fclose( $ifp );
        // Set correct file permissions
        $stat = @ stat( dirname( $new_file ) );
        $perms = $stat['mode'] & 0007777;
        $perms = $perms & 0000666;
        @ chmod( $new_file, $perms );

        // Compute the URL
        $url = $upload['url'] . "/$filename";

        return array( 'file' => $new_file, 'url' => $url, 'error' => false );
}

/**
 * Retrieve the file type based on the extension name.
 *
 * @package WordPress
 * @since 2.5.0
 * @uses apply_filters() Calls 'ext2type' hook on default supported types.
 *
 * @param string $ext The extension to search.
 * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
 */
function wp_ext2type( $ext ) {
        $ext2type = apply_filters('ext2type', array(
                'audio' => array('aac','ac3','aif','aiff','mp1','mp2','mp3','m3a','m4a','m4b','ogg','ram','wav','wma'),
                'video' => array('asf','avi','divx','dv','mov','mpg','mpeg','mp4','mpv','ogm','qt','rm','vob','wmv', 'm4v'),
                'document' => array('doc','docx','pages','odt','rtf','pdf'),
                'spreadsheet' => array('xls','xlsx','numbers','ods'),
                'interactive' => array('ppt','pptx','key','odp','swf'),
                'text' => array('txt'),
                'archive' => array('tar','bz2','gz','cab','dmg','rar','sea','sit','sqx','zip'),
                'code' => array('css','html','php','js'),
        ));
        foreach ( $ext2type as $type => $exts )
                if ( in_array($ext, $exts) )
                        return $type;
}

/**
 * Retrieve the file type from the file name.
 *
 * You can optionally define the mime array, if needed.
 *
 * @since 2.0.4
 *
 * @param string $filename File name or path.
 * @param array $mimes Optional. Key is the file extension with value as the mime type.
 * @return array Values with extension first and mime type.
 */
function wp_check_filetype( $filename, $mimes = null ) {
        if ( empty($mimes) )
                $mimes = get_allowed_mime_types();
        $type = false;
        $ext = false;

        foreach ( $mimes as $ext_preg => $mime_match ) {
                $ext_preg = '!\.(' . $ext_preg . ')$!i';
                if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
                        $type = $mime_match;
                        $ext = $ext_matches[1];
                        break;
                }
        }

        return compact( 'ext', 'type' );
}

/**
 * Retrieve list of allowed mime types and file extensions.
 *
 * @since 2.8.6
 *
 * @return array Array of mime types keyed by the file extension regex corresponding to those types.
 */
function get_allowed_mime_types() {
        static $mimes = false;

        if ( !$mimes ) {
                // Accepted MIME types are set here as PCRE unless provided.
                $mimes = apply_filters( 'upload_mimes', array(
                'jpg|jpeg|jpe' => 'image/jpeg',
                'gif' => 'image/gif',
                'png' => 'image/png',
                'bmp' => 'image/bmp',
                'tif|tiff' => 'image/tiff',
                'ico' => 'image/x-icon',
                'asf|asx|wax|wmv|wmx' => 'video/asf',
                'avi' => 'video/avi',
                'divx' => 'video/divx',
                'flv' => 'video/x-flv',
                'mov|qt' => 'video/quicktime',
                'mpeg|mpg|mpe' => 'video/mpeg',
                'txt|c|cc|h' => 'text/plain',
                'rtx' => 'text/richtext',
                'css' => 'text/css',
                'htm|html' => 'text/html',
                'mp3|m4a' => 'audio/mpeg',
                'mp4|m4v' => 'video/mp4',
                'ra|ram' => 'audio/x-realaudio',
                'wav' => 'audio/wav',
                'ogg' => 'audio/ogg',
                'mid|midi' => 'audio/midi',
                'wma' => 'audio/wma',
                'rtf' => 'application/rtf',
                'js' => 'application/javascript',
                'pdf' => 'application/pdf',
                'doc|docx' => 'application/msword',
                'pot|pps|ppt|pptx' => 'application/vnd.ms-powerpoint',
                'wri' => 'application/vnd.ms-write',
                'xla|xls|xlsx|xlt|xlw' => 'application/vnd.ms-excel',
                'mdb' => 'application/vnd.ms-access',
                'mpp' => 'application/vnd.ms-project',
                'swf' => 'application/x-shockwave-flash',
                'class' => 'application/java',
                'tar' => 'application/x-tar',
                'zip' => 'application/zip',
                'gz|gzip' => 'application/x-gzip',
                'exe' => 'application/x-msdownload',
                // openoffice formats
                'odt' => 'application/vnd.oasis.opendocument.text',
                'odp' => 'application/vnd.oasis.opendocument.presentation',
                'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
                'odg' => 'application/vnd.oasis.opendocument.graphics',
                'odc' => 'application/vnd.oasis.opendocument.chart',
                'odb' => 'application/vnd.oasis.opendocument.database',
                'odf' => 'application/vnd.oasis.opendocument.formula',
                ) );
        }

        return $mimes;
}

/**
 * Retrieve nonce action "Are you sure" message.
 *
 * The action is split by verb and noun. The action format is as follows:
 * verb-action_extra. The verb is before the first dash and has the format of
 * letters and no spaces and numbers. The noun is after the dash and before the
 * underscore, if an underscore exists. The noun is also only letters.
 *
 * The filter will be called for any action, which is not defined by WordPress.
 * You may use the filter for your plugin to explain nonce actions to the user,
 * when they get the "Are you sure?" message. The filter is in the format of
 * 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the
 * $noun replaced by the found noun. The two parameters that are given to the
 * hook are the localized "Are you sure you want to do this?" message with the
 * extra text (the text after the underscore).
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param string $action Nonce action.
 * @return string Are you sure message.
 */
function wp_explain_nonce( $action ) {
        if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) {
                $verb = $matches[1];
                $noun = $matches[2];

                $trans = array();
                $trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: &#8220;%s&#8221; has failed.' ), 'get_the_title' );

                $trans['add']['category']      = array( __( 'Your attempt to add this category has failed.' ), false );
                $trans['delete']['category']   = array( __( 'Your attempt to delete this category: &#8220;%s&#8221; has failed.' ), 'get_cat_name' );
                $trans['update']['category']   = array( __( 'Your attempt to edit this category: &#8220;%s&#8221; has failed.' ), 'get_cat_name' );

                $trans['delete']['comment']    = array( __( 'Your attempt to delete this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['approve']['comment']   = array( __( 'Your attempt to approve this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['update']['comment']    = array( __( 'Your attempt to edit this comment: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['bulk']['comments']     = array( __( 'Your attempt to bulk modify comments has failed.' ), false );
                $trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false );

                $trans['add']['bookmark']      = array( __( 'Your attempt to add this link has failed.' ), false );
                $trans['delete']['bookmark']   = array( __( 'Your attempt to delete this link: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['update']['bookmark']   = array( __( 'Your attempt to edit this link: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['bulk']['bookmarks']    = array( __( 'Your attempt to bulk modify links has failed.' ), false );

                $trans['add']['page']          = array( __( 'Your attempt to add this page has failed.' ), false );
                $trans['delete']['page']       = array( __( 'Your attempt to delete this page: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
                $trans['update']['page']       = array( __( 'Your attempt to edit this page: &#8220;%s&#8221; has failed.' ), 'get_the_title' );

                $trans['edit']['plugin']       = array( __( 'Your attempt to edit this plugin file: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['activate']['plugin']   = array( __( 'Your attempt to activate this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['upgrade']['plugin']    = array( __( 'Your attempt to upgrade this plugin: &#8220;%s&#8221; has failed.' ), 'use_id' );

                $trans['add']['post']          = array( __( 'Your attempt to add this post has failed.' ), false );
                $trans['delete']['post']       = array( __( 'Your attempt to delete this post: &#8220;%s&#8221; has failed.' ), 'get_the_title' );
                $trans['update']['post']       = array( __( 'Your attempt to edit this post: &#8220;%s&#8221; has failed.' ), 'get_the_title' );

                $trans['add']['user']          = array( __( 'Your attempt to add this user has failed.' ), false );
                $trans['delete']['users']      = array( __( 'Your attempt to delete users has failed.' ), false );
                $trans['bulk']['users']        = array( __( 'Your attempt to bulk modify users has failed.' ), false );
                $trans['update']['user']       = array( __( 'Your attempt to edit this user: &#8220;%s&#8221; has failed.' ), 'get_the_author_meta', 'display_name' );
                $trans['update']['profile']    = array( __( 'Your attempt to modify the profile for: &#8220;%s&#8221; has failed.' ), 'get_the_author_meta', 'display_name' );

                $trans['update']['options']    = array( __( 'Your attempt to edit your settings has failed.' ), false );
                $trans['update']['permalink']  = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
                $trans['edit']['file']         = array( __( 'Your attempt to edit this file: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['edit']['theme']        = array( __( 'Your attempt to edit this theme file: &#8220;%s&#8221; has failed.' ), 'use_id' );
                $trans['switch']['theme']      = array( __( 'Your attempt to switch to this theme: &#8220;%s&#8221; has failed.' ), 'use_id' );

                $trans['log']['out']           = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false );

                if ( isset( $trans[$verb][$noun] ) ) {
                        if ( !empty( $trans[$verb][$noun][1] ) ) {
                                $lookup = $trans[$verb][$noun][1];
                                if ( isset($trans[$verb][$noun][2]) )
                                        $lookup_value = $trans[$verb][$noun][2];
                                $object = $matches[4];
                                if ( 'use_id' != $lookup ) {
                                        if ( isset( $lookup_value ) )
                                                $object = call_user_func( $lookup, $lookup_value, $object );
                                        else
                                                $object = call_user_func( $lookup, $object );
                                }
                                return sprintf( $trans[$verb][$noun][0], esc_html($object) );
                        } else {
                                return $trans[$verb][$noun][0];
                        }
                }

                return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $matches[4] : '' );
        } else {
                return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) );
        }
}

/**
 * Display "Are You Sure" message to confirm the action being taken.
 *
 * If the action has the nonce explain message, then it will be displayed along
 * with the "Are you sure?" message.
 *
 * @package WordPress
 * @subpackage Security
 * @since 2.0.4
 *
 * @param string $action The nonce action.
 */
function wp_nonce_ays( $action ) {
        $title = __( 'WordPress Failure Notice' );
        $html = esc_html( wp_explain_nonce( $action ) );
        if ( wp_get_referer() )
                $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
        elseif ( 'log-out' == $action )
                $html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() );

        wp_die( $html, $title);
}

/**
 * Kill WordPress execution and display HTML message with error message.
 *
 * Call this function complements the die() PHP function. The difference is that
 * HTML will be displayed to the user. It is recommended to use this function
 * only, when the execution should not continue any further. It is not
 * recommended to call this function very often and try to handle as many errors
 * as possible siliently.
 *
 * @since 2.0.4
 *
 * @param string $message Error message.
 * @param string $title Error title.
 * @param string|array $args Optional arguements to control behaviour.
 */
function wp_die( $message, $title = '', $args = array() ) {
        global $wp_locale;

        $defaults = array( 'response' => 500 );
        $r = wp_parse_args($args, $defaults);

        $have_gettext = function_exists('__');

        if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
                if ( empty( $title ) ) {
                        $error_data = $message->get_error_data();
                        if ( is_array( $error_data ) && isset( $error_data['title'] ) )
                                $title = $error_data['title'];
                }
                $errors = $message->get_error_messages();
                switch ( count( $errors ) ) :
                case 0 :
                        $message = '';
                        break;
                case 1 :
                        $message = "<p>{$errors[0]}</p>";
                        break;
                default :
                        $message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
                        break;
                endswitch;
        } elseif ( is_string( $message ) ) {
                $message = "<p>$message</p>";
        }

        if ( isset( $r['back_link'] ) && $r['back_link'] ) {
                $back_text = $have_gettext? __('&laquo; Back') : '&laquo; Back';
                $message .= "\n<p><a href='javascript:history.back()'>$back_text</p>";
        }

        if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL )
                $admin_dir = WP_SITEURL . '/wp-admin/';
        elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) )
                $admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/';
        elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false )
                $admin_dir = '';
        else
                $admin_dir = 'wp-admin/';

        if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
        if( !headers_sent() ){
                status_header( $r['response'] );
                nocache_headers();
                header( 'Content-Type: text/html; charset=utf-8' );
        }

        if ( empty($title) ) {
                $title = $have_gettext? __('WordPress &rsaquo; Error') : 'WordPress &rsaquo; Error';
        }

        $text_direction = 'ltr';
        if ( isset($r['text_direction']) && $r['text_direction'] == 'rtl' ) $text_direction = 'rtl';
        if ( ( $wp_locale ) && ( 'rtl' == $wp_locale->text_direction ) ) $text_direction = 'rtl';
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
<head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title><?php echo $title ?></title>
        <link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install.css" type="text/css" />
<?php
if ( 'rtl' == $text_direction ) : ?>
        <link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install-rtl.css" type="text/css" />
<?php endif; ?>
</head>
<body id="error-page">
<?php endif; ?>
        <?php echo $message; ?>
</body>
<!-- Ticket #8942, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono -->
</html>
<?php
        die();
}

/**
 * Retrieve the WordPress home page URL.
 *
 * If the constant named 'WP_HOME' exists, then it willl be used and returned by
 * the function. This can be used to counter the redirection on your local
 * development environment.
 *
 * @access private
 * @package WordPress
 * @since 2.2.0
 *
 * @param string $url URL for the home location
 * @return string Homepage location.
 */
function _config_wp_home( $url = '' ) {
        if ( defined( 'WP_HOME' ) )
                return WP_HOME;
        return $url;
}

/**
 * Retrieve the WordPress site URL.
 *
 * If the constant named 'WP_SITEURL' is defined, then the value in that
 * constant will always be returned. This can be used for debugging a site on
 * your localhost while not having to change the database to your URL.
 *
 * @access private
 * @package WordPress
 * @since 2.2.0
 *
 * @param string $url URL to set the WordPress site location.
 * @return string The WordPress Site URL
 */
function _config_wp_siteurl( $url = '' ) {
        if ( defined( 'WP_SITEURL' ) )
                return WP_SITEURL;
        return $url;
}

/**
 * Set the localized direction for MCE plugin.
 *
 * Will only set the direction to 'rtl', if the WordPress locale has the text
 * direction set to 'rtl'.
 *
 * Fills in the 'directionality', 'plugins', and 'theme_advanced_button1' array
 * keys. These keys are then returned in the $input array.
 *
 * @access private
 * @package WordPress
 * @subpackage MCE
 * @since 2.1.0
 *
 * @param array $input MCE plugin array.
 * @return array Direction set for 'rtl', if needed by locale.
 */
function _mce_set_direction( $input ) {
        global $wp_locale;

        if ( 'rtl' == $wp_locale->text_direction ) {
                $input['directionality'] = 'rtl';
                $input['plugins'] .= ',directionality';
                $input['theme_advanced_buttons1'] .= ',ltr';
        }

        return $input;
}


/**
 * Convert smiley code to the icon graphic file equivalent.
 *
 * You can turn off smilies, by going to the write setting screen and unchecking
 * the box, or by setting 'use_smilies' option to false or removing the option.
 *
 * Plugins may override the default smiley list by setting the $wpsmiliestrans
 * to an array, with the key the code the blogger types in and the value the
 * image file.
 *
 * The $wp_smiliessearch global is for the regular expression and is set each
 * time the function is called.
 *
 * The full list of smilies can be found in the function and won't be listed in
 * the description. Probably should create a Codex page for it, so that it is
 * available.
 *
 * @global array $wpsmiliestrans
 * @global array $wp_smiliessearch
 * @since 2.2.0
 */
function smilies_init() {
        global $wpsmiliestrans, $wp_smiliessearch;

        // don't bother setting up smilies if they are disabled
        if ( !get_option( 'use_smilies' ) )
                return;

        if ( !isset( $wpsmiliestrans ) ) {
                $wpsmiliestrans = array(
                ':mrgreen:' => 'icon_mrgreen.gif',
                ':neutral:' => 'icon_neutral.gif',
                ':twisted:' => 'icon_twisted.gif',
                  ':arrow:' => 'icon_arrow.gif',
                  ':shock:' => 'icon_eek.gif',
                  ':smile:' => 'icon_smile.gif',
                    ':???:' => 'icon_confused.gif',
                   ':cool:' => 'icon_cool.gif',
                   ':evil:' => 'icon_evil.gif',
                   ':grin:' => 'icon_biggrin.gif',
                   ':idea:' => 'icon_idea.gif',
                   ':oops:' => 'icon_redface.gif',
                   ':razz:' => 'icon_razz.gif',
                   ':roll:' => 'icon_rolleyes.gif',
                   ':wink:' => 'icon_wink.gif',
                    ':cry:' => 'icon_cry.gif',
                    ':eek:' => 'icon_surprised.gif',
                    ':lol:' => 'icon_lol.gif',
                    ':mad:' => 'icon_mad.gif',
                    ':sad:' => 'icon_sad.gif',
                      '8-)' => 'icon_cool.gif',
                      '8-O' => 'icon_eek.gif',
                      ':-(' => 'icon_sad.gif',
                      ':-)' => 'icon_smile.gif',
                      ':-?' => 'icon_confused.gif',
                      ':-D' => 'icon_biggrin.gif',
                      ':-P' => 'icon_razz.gif',
                      ':-o' => 'icon_surprised.gif',
                      ':-x' => 'icon_mad.gif',
                      ':-|' => 'icon_neutral.gif',
                      ';-)' => 'icon_wink.gif',
                       '8)' => 'icon_cool.gif',
                       '8O' => 'icon_eek.gif',
                       ':(' => 'icon_sad.gif',
                       ':)' => 'icon_smile.gif',
                       ':?' => 'icon_confused.gif',
                       ':D' => 'icon_biggrin.gif',
                       ':P' => 'icon_razz.gif',
                       ':o' => 'icon_surprised.gif',
                       ':x' => 'icon_mad.gif',
                       ':|' => 'icon_neutral.gif',
                       ';)' => 'icon_wink.gif',
                      ':!:' => 'icon_exclaim.gif',
                      ':?:' => 'icon_question.gif',
                );
        }

        if (count($wpsmiliestrans) == 0) {
                return;
        }

        /*
         * NOTE: we sort the smilies in reverse key order. This is to make sure
         * we match the longest possible smilie (:???: vs :?) as the regular
         * expression used below is first-match
         */
        krsort($wpsmiliestrans);

        $wp_smiliessearch = '/(?:\s|^)';

        $subchar = '';
        foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
                $firstchar = substr($smiley, 0, 1);
                $rest = substr($smiley, 1);

                // new subpattern?
                if ($firstchar != $subchar) {
                        if ($subchar != '') {
                                $wp_smiliessearch .= ')|(?:\s|^)';
                        }
                        $subchar = $firstchar;
                        $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';
                } else {
                        $wp_smiliessearch .= '|';
                }
                $wp_smiliessearch .= preg_quote($rest, '/');
        }

        $wp_smiliessearch .= ')(?:\s|$)/m';
}

/**
 * Merge user defined arguments into defaults array.
 *
 * This function is used throughout WordPress to allow for both string or array
 * to be merged into another array.
 *
 * @since 2.2.0
 *
 * @param string|array $args Value to merge with $defaults
 * @param array $defaults Array that serves as the defaults.
 * @return array Merged user defined values with defaults.
 */
function wp_parse_args( $args, $defaults = '' ) {
        if ( is_object( $args ) )
                $r = get_object_vars( $args );
        elseif ( is_array( $args ) )
                $r =& $args;
        else
                wp_parse_str( $args, $r );

        if ( is_array( $defaults ) )
                return array_merge( $defaults, $r );
        return $r;
}

/**
 * Determines if default embed handlers should be loaded.
 *
 * Checks to make sure that the embeds library hasn't already been loaded. If
 * it hasn't, then it will load the embeds library.
 *
 * @since 2.9
 */
function wp_maybe_load_embeds() {
        if ( ! apply_filters('load_default_embeds', true) )
                return;
        require_once( ABSPATH . WPINC . '/default-embeds.php' );
}

/**
 * Determines if Widgets library should be loaded.
 *
 * Checks to make sure that the widgets library hasn't already been loaded. If
 * it hasn't, then it will load the widgets library and run an action hook.
 *
 * @since 2.2.0
 * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value.
 */
function wp_maybe_load_widgets() {
        if ( ! apply_filters('load_default_widgets', true) )
                return;
        require_once( ABSPATH . WPINC . '/default-widgets.php' );
        add_action( '_admin_menu', 'wp_widgets_add_menu' );
}

/**
 * Append the Widgets menu to the themes main menu.
 *
 * @since 2.2.0
 * @uses $submenu The administration submenu list.
 */
function wp_widgets_add_menu() {
        global $submenu;
        $submenu['themes.php'][7] = array( __( 'Widgets' ), 'switch_themes', 'widgets.php' );
        ksort( $submenu['themes.php'], SORT_NUMERIC );
}

/**
 * Flush all output buffers for PHP 5.2.
 *
 * Make sure all output buffers are flushed before our singletons our destroyed.
 *
 * @since 2.2.0
 */
function wp_ob_end_flush_all() {
        $levels = ob_get_level();
        for ($i=0; $i<$levels; $i++)
                ob_end_flush();
}

/**
 * Load the correct database class file.
 *
 * This function is used to load the database class file either at runtime or by
 * wp-admin/setup-config.php We must globalise $wpdb to ensure that it is
 * defined globally by the inline code in wp-db.php.
 *
 * @since 2.5.0
 * @global $wpdb WordPress Database Object
 */
function require_wp_db() {
        global $wpdb;
        if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
                require_once( WP_CONTENT_DIR . '/db.php' );
        else
                require_once( ABSPATH . WPINC . '/wp-db.php' );
}

/**
 * Load custom DB error or display WordPress DB error.
 *
 * If a file exists in the wp-content directory named db-error.php, then it will
 * be loaded instead of displaying the WordPress DB error. If it is not found,
 * then the WordPress DB error will be displayed instead.
 *
 * The WordPress DB error sets the HTTP status header to 500 to try to prevent
 * search engines from caching the message. Custom DB messages should do the
 * same.
 *
 * This function was backported to the the WordPress 2.3.2, but originally was
 * added in WordPress 2.5.0.
 *
 * @since 2.3.2
 * @uses $wpdb
 */
function dead_db() {
        global $wpdb;

        // Load custom DB error template, if present.
        if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {
                require_once( WP_CONTENT_DIR . '/db-error.php' );
                die();
        }

        // If installing or in the admin, provide the verbose message.
        if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )
                wp_die($wpdb->error);

        // Otherwise, be terse.
        status_header( 500 );
        nocache_headers();
        header( 'Content-Type: text/html; charset=utf-8' );
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>Database Error</title>

</head>
<body>
        <h1>Error establishing a database connection</h1>
</body>
</html>
<?php
        die();
}

/**
 * Converts value to nonnegative integer.
 *
 * @since 2.5.0
 *
 * @param mixed $maybeint Data you wish to have convered to an nonnegative integer
 * @return int An nonnegative integer
 */
function absint( $maybeint ) {
        return abs( intval( $maybeint ) );
}

/**
 * Determines if the blog can be accessed over SSL.
 *
 * Determines if blog can be accessed over SSL by using cURL to access the site
 * using the https in the siteurl. Requires cURL extension to work correctly.
 *
 * @since 2.5.0
 *
 * @return bool Whether or not SSL access is available
 */
function url_is_accessable_via_ssl($url)
{
        if (in_array('curl', get_loaded_extensions())) {
                $ssl = preg_replace( '/^http:\/\//', 'https://',  $url );

                $ch = curl_init();
                curl_setopt($ch, CURLOPT_URL, $ssl);
                curl_setopt($ch, CURLOPT_FAILONERROR, true);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
                curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);

                curl_exec($ch);

                $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
                curl_close ($ch);

                if ($status == 200 || $status == 401) {
                        return true;
                }
        }
        return false;
}

/**
 * Secure URL, if available or the given URL.
 *
 * @since 2.5.0
 *
 * @param string $url Complete URL path with transport.
 * @return string Secure or regular URL path.
 */
function atom_service_url_filter($url)
{
        if ( url_is_accessable_via_ssl($url) )
                return preg_replace( '/^http:\/\//', 'https://',  $url );
        else
                return $url;
}

/**
 * Marks a function as deprecated and informs when it has been used.
 *
 * There is a hook deprecated_function_run that will be called that can be used
 * to get the backtrace up to what file and function called the deprecated
 * function.
 *
 * The current behavior is to trigger an user error if WP_DEBUG is true.
 *
 * This function is to be used in every function in depreceated.php
 *
 * @package WordPress
 * @package Debug
 * @since 2.5.0
 * @access private
 *
 * @uses do_action() Calls 'deprecated_function_run' and passes the function name and what to use instead.
 * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
 *
 * @param string $function The function that was called
 * @param string $version The version of WordPress that deprecated the function
 * @param string $replacement Optional. The function that should have been called
 */
function _deprecated_function($function, $version, $replacement=null) {

        do_action('deprecated_function_run', $function, $replacement);

        // Allow plugin to filter the output error trigger
        if( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true )) {
                if( !is_null($replacement) )
                        trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
                else
                        trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
        }
}

/**
 * Marks a file as deprecated and informs when it has been used.
 *
 * There is a hook deprecated_file_included that will be called that can be used
 * to get the backtrace up to what file and function included the deprecated
 * file.
 *
 * The current behavior is to trigger an user error if WP_DEBUG is true.
 *
 * This function is to be used in every file that is depreceated
 *
 * @package WordPress
 * @package Debug
 * @since 2.5.0
 * @access private
 *
 * @uses do_action() Calls 'deprecated_file_included' and passes the file name and what to use instead.
 * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
 *
 * @param string $file The file that was included
 * @param string $version The version of WordPress that deprecated the function
 * @param string $replacement Optional. The function that should have been called
 */
function _deprecated_file($file, $version, $replacement=null) {

        do_action('deprecated_file_included', $file, $replacement);

        // Allow plugin to filter the output error trigger
        if( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) {
                if( !is_null($replacement) )
                        trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) );
                else
                        trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $file, $version ) );
        }
}

/**
 * Is the server running earlier than 1.5.0 version of lighttpd
 *
 * @since 2.5.0
 *
 * @return bool Whether the server is running lighttpd < 1.5.0
 */
function is_lighttpd_before_150() {
        $server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );
        $server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';
        return  'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );
}

/**
 * Does the specified module exist in the apache config?
 *
 * @since 2.5.0
 *
 * @param string $mod e.g. mod_rewrite
 * @param bool $default The default return value if the module is not found
 * @return bool
 */
function apache_mod_loaded($mod, $default = false) {
        global $is_apache;

        if ( !$is_apache )
                return false;

        if ( function_exists('apache_get_modules') ) {
                $mods = apache_get_modules();
                if ( in_array($mod, $mods) )
                        return true;
        } elseif ( function_exists('phpinfo') ) {
                        ob_start();
                        phpinfo(8);
                        $phpinfo = ob_get_clean();
                        if ( false !== strpos($phpinfo, $mod) )
                                return true;
        }
        return $default;
}

/**
 * File validates against allowed set of defined rules.
 *
 * A return value of '1' means that the $file contains either '..' or './'. A
 * return value of '2' means that the $file contains ':' after the first
 * character. A return value of '3' means that the file is not in the allowed
 * files list.
 *
 * @since 1.2.0
 *
 * @param string $file File path.
 * @param array $allowed_files List of allowed files.
 * @return int 0 means nothing is wrong, greater than 0 means something was wrong.
 */
function validate_file( $file, $allowed_files = '' ) {
        if ( false !== strpos( $file, '..' ))
                return 1;

        if ( false !== strpos( $file, './' ))
                return 1;

        if (':' == substr( $file, 1, 1 ))
                return 2;

        if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) )
                return 3;

        return 0;
}

/**
 * Determine if SSL is used.
 *
 * @since 2.6.0
 *
 * @return bool True if SSL, false if not used.
 */
function is_ssl() {
        if ( isset($_SERVER['HTTPS']) ) {
                if ( 'on' == strtolower($_SERVER['HTTPS']) )
                        return true;
                if ( '1' == $_SERVER['HTTPS'] )
                        return true;
        } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
                return true;
        }
        return false;
}

/**
 * Whether SSL login should be forced.
 *
 * @since 2.6.0
 *
 * @param string|bool $force Optional.
 * @return bool True if forced, false if not forced.
 */
function force_ssl_login( $force = null ) {
        static $forced = false;

        if ( !is_null( $force ) ) {
                $old_forced = $forced;
                $forced = $force;
                return $old_forced;
        }

        return $forced;
}

/**
 * Whether to force SSL used for the Administration Panels.
 *
 * @since 2.6.0
 *
 * @param string|bool $force
 * @return bool True if forced, false if not forced.
 */
function force_ssl_admin( $force = null ) {
        static $forced = false;

        if ( !is_null( $force ) ) {
                $old_forced = $forced;
                $forced = $force;
                return $old_forced;
        }

        return $forced;
}

/**
 * Guess the URL for the site.
 *
 * Will remove wp-admin links to retrieve only return URLs not in the wp-admin
 * directory.
 *
 * @since 2.6.0
 *
 * @return string
 */
function wp_guess_url() {
        if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {
                $url = WP_SITEURL;
        } else {
                $schema = ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) ? 'https://' : 'http://';
                $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
        }
        return $url;
}

/**
 * Suspend cache invalidation.
 *
 * Turns cache invalidation on and off.  Useful during imports where you don't wont to do invalidations
 * every time a post is inserted.  Callers must be sure that what they are doing won't lead to an inconsistent
 * cache when invalidation is suspended.
 *
 * @since 2.7.0
 *
 * @param bool $suspend Whether to suspend or enable cache invalidation
 * @return bool The current suspend setting
 */
function wp_suspend_cache_invalidation($suspend = true) {
        global $_wp_suspend_cache_invalidation;

        $current_suspend = $_wp_suspend_cache_invalidation;
        $_wp_suspend_cache_invalidation = $suspend;
        return $current_suspend;
}

/**
 * Retrieve site option value based on option name.
 *
 * @see get_option()
 * @package WordPress
 * @subpackage Option
 * @since 2.8.0
 * @uses apply_filters() Calls 'pre_site_option_$option' null to allow overwriting
 *              the option value in a plugin.
 * @uses apply_filters() Calls 'site_option_$option' with the option name value.
 *
 * @param string $option Name of option to retrieve. Should already be SQL-escaped
 * @param mixed $default Optional value to return if option doesn't exist
 * @param use_cache Used only in WordPress MU.
 * @return mixed Value set for the option.
 */
function get_site_option( $option, $default = false, $use_cache = true ) {
        // Allow plugins to short-circuit site options.
        $pre = apply_filters( 'pre_site_option_' . $option, null );
        if ( null !== $pre )
                return $pre;

        $value = get_option( $option, $default ) ;

        return apply_filters( 'site_option_' . $option, $value );
}

/**
 * Add a new site option.
 *
 * @see add_option()
 * @package WordPress
 * @subpackage Option
 * @since 2.8.0
 * @link http://alex.vort-x.net/blog/ Thanks Alex Stapleton
 * @uses apply_filters() Calls 'pre_add_option_$option' to allow overwriting
 *   the option value in a plugin.
 *
 * @param string $option Name of option to add. Expects to not be SQL escaped.
 * @param mixed $value Optional. Option value, can be anything.
 * @return bool False if option was not added and true if option was added.
 */
function add_site_option( $option, $value ) {
        $value = apply_filters( 'pre_add_site_option_' . $option, $value );
        do_action( 'add_site_option', $option, $value );
        $result = add_option( $option, $value );
        if ( $result ) {
                do_action( "add_site_option_{$option}", $option, $value );
                do_action( 'added_site_option', $option, $value );
        }
        return $result;
}

/**
 * Removes site option by name.
 *
 * @see delete_option()
 * @package WordPress
 * @subpackage Option
 * @since 2.8.0
 *
 * @param string $option Name of option to remove. Expected to be SQL-escaped.
 * @return bool True, if succeed. False, if failure.
 */
function delete_site_option( $option ) {
        do_action( 'delete_site_option', $option );
        $result = delete_option( $option );
        if ( $result ) {
                do_action( "delete_site_option_{$option}", $option );
                do_action( 'deleted_site_option', $option );
        }
        return $result;
}

/**
 * Update the value of a site option that was already added.
 *
 * @see update_option()
 * @since 2.8.0
 * @package WordPress
 * @subpackage Option
 * @uses apply_filters() calls 'pre_update_site_option_$option' to allow overwriting
 *   the option value in a plugin.
 * @param string $option Option name. Expected to not be SQL-escaped
 * @param mixed $value Option value.
 * @return bool False if value was not updated and true if value was updated.
 */
function update_site_option( $option, $value ) {
        $old_value = get_site_option( $option );
        $new_value = apply_filters( 'pre_update_site_option_' . $option, $value, $old_value );

        if ( $new_value === $old_value )
                return false;

        if ( false === $old_value )
                return add_site_option( $option, $new_value );

        do_action( 'update_site_option', $option, $old_value, $new_value );
        $result = update_option( $option, $new_value );
        if ( $result ) {
                do_action( "update_site_option_{$option}", $option, $old_value, $new_value );
                do_action( 'updated_site_option', $option, $old_value, $new_value );
        }
        return $result;
}

/**
 * Delete a site transient
 *
 * @see delete_transient()
 * @since 2.9.0
 * @package WordPress
 * @subpackage Transient
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @return bool true if successful, false otherwise
 */
function delete_site_transient($transient) {
        global $_wp_using_ext_object_cache;

        do_action( 'delete_site_transient', $transient );
        if ( $_wp_using_ext_object_cache ) {
                $result = wp_cache_delete( $transient, 'site-transient' );
        } else {
                $result = delete_site_option( '_site_transient_' . esc_sql( $transient ) );
        }

        if ( $result ) {
                do_action( "delete_site_transient_{$transient}", $transient );
                do_action( 'deleted_site_transient', $transient );
        }
        return $result;
}

/**
 * Get the value of a site transient.
 *
 * If the transient does not exist or does not have a value, then the return value
 * will be false.
 * 
 * @see get_transient()
 * @since 2.9.0
 * @package WordPress
 * @subpackage Transient
 * @uses apply_filters() calls 'pre_site_transient_$transient' and 'site_transient_$transient'
     to allow overwriting the transient value in a plugin.
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @return mixed Value of transient
 */
function get_site_transient($transient) {
        global $_wp_using_ext_object_cache;

        $pre = apply_filters( 'pre_site_transient_' . $transient, null );
        if ( null !== $pre )
                return $pre;

        if ( $_wp_using_ext_object_cache ) {
                $value = wp_cache_get( $transient, 'site-transient' );
        } else {
                $safe_transient = esc_sql( $transient );
                $transient_option = '_site_transient_' . $safe_transient;
                $transient_timeout = '_site_transient_timeout_' . $safe_transient;
                if ( get_site_option( $transient_timeout ) < time() ) {
                        delete_site_option( $transient_option  );
                        delete_site_option( $transient_timeout );
                        return false;
                }

                $value = get_site_option( $transient_option );
        }

        return apply_filters( 'site_transient_' . $transient, $value );
}

/**
 * Set/update the value of a site transient
 *
 * You do not need to serialize values, if the value needs to be serialize, then
 * it will be serialized before it is set.
 *
 * @see set_transient()
 * @since 2.9.0
 * @package WordPress
 * @subpackage Transient
 * @uses apply_filters() Calls 'pre_set_site_transient_$transient' null to allow overwriting
 *              the transient value in a plugin.
 * @uses apply_filters() Calls 'pre_set_site_transient_expiration_$transient' null to allow overwriting
 *              the transient expiration in a plugin.
 *
 * @param string $transient Transient name. Expected to not be SQL-escaped
 * @param mixed $value Transient value.
 * @param int $expiration Time until expiration in seconds, default 0
 * @return bool False if value was not set and true if value was set.
 */
function set_site_transient($transient, $value, $expiration = 0) {
        global $_wp_using_ext_object_cache;

        $value = apply_filters( 'pre_set_site_transient_' . $transient, $value, $expiration );
        $expiration = apply_filters( 'pre_set_site_transient_expiration_' . $transient, $expiration, $value );

        do_action( 'set_site_transient', $transient, $value, $expiration );
        if ( $_wp_using_ext_object_cache ) {
                $result = wp_cache_set($transient, $value, 'site-transient', $expiration);
        } else {
                $transient_timeout = '_site_transient_timeout_' . $transient;
                $transient = '_site_transient_' . $transient;
                $safe_transient = esc_sql($transient);
                if ( false === get_site_option( $safe_transient ) ) {
                        if ( 0 != $expiration )
                                add_site_option( $transient_timeout, time() + $expiration );
                        $result = add_site_option($transient, $value);
                } else {
                        if ( 0 != $expiration )
                                update_site_option( $transient_timeout, time() + $expiration );
                        $result = update_site_option( $transient, $value );
                }
        }
        if ( $result ) {
                do_action( "set_site_transient_{$transient}", $transient, $value, $expiration );
                do_action( 'setted_site_transient', $transient, $value, $expiration );
        }
        return $result;
}

/**
 * gmt_offset modification for smart timezone handling
 *
 * Overrides the gmt_offset option if we have a timezone_string available
 */
function wp_timezone_override_offset() {
        if ( !wp_timezone_supported() ) {
                return false;
        }
        if ( !$timezone_string = get_option( 'timezone_string' ) ) {
                return false;
        }

        @date_default_timezone_set( $timezone_string );
        $timezone_object = timezone_open( $timezone_string );
        $datetime_object = date_create();
        if ( false === $timezone_object || false === $datetime_object ) {
                return false;
        }
        return round( timezone_offset_get( $timezone_object, $datetime_object ) / 3600, 2 );
}

/**
 * Check for PHP timezone support
 */
function wp_timezone_supported() {
        $support = false;
        if (
                function_exists( 'date_default_timezone_set' ) &&
                function_exists( 'timezone_identifiers_list' ) &&
                function_exists( 'timezone_open' ) &&
                function_exists( 'timezone_offset_get' )
        ) {
                $support = true;
        }
        return apply_filters( 'timezone_support', $support );
}

function _wp_timezone_choice_usort_callback( $a, $b ) {
        // Don't use translated versions of Etc
        if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) {
                // Make the order of these more like the old dropdown
                if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) {
                        return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) );
                }
                if ( 'UTC' === $a['city'] ) {
                        if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) {
                                return 1;
                        }
                        return -1;
                }
                if ( 'UTC' === $b['city'] ) {
                        if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) {
                                return -1;
                        }
                        return 1;
                }
                return strnatcasecmp( $a['city'], $b['city'] );
        }
        if ( $a['t_continent'] == $b['t_continent'] ) {
                if ( $a['t_city'] == $b['t_city'] ) {
                        return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] );
                }
                return strnatcasecmp( $a['t_city'], $b['t_city'] );
        } else {
                // Force Etc to the bottom of the list
                if ( 'Etc' === $a['continent'] ) {
                        return 1;
                }
                if ( 'Etc' === $b['continent'] ) {
                        return -1;
                }
                return strnatcasecmp( $a['t_continent'], $b['t_continent'] );
        }
}

/**
 * Gives a nicely formatted list of timezone strings // temporary! Not in final
 *
 * @param $selected_zone string Selected Zone
 *
 */
function wp_timezone_choice( $selected_zone ) {
        static $mo_loaded = false;

        $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific', 'Etc' );

        // Load translations for continents and cities
        if ( !$mo_loaded ) {
                $locale = get_locale();
                $mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo';
                load_textdomain( 'continents-cities', $mofile );
                $mo_loaded = true;
        }

        $zonen = array();
        foreach ( timezone_identifiers_list() as $zone ) {
                $zone = explode( '/', $zone );
                if ( !in_array( $zone[0], $continents ) ) {
                        continue;
                }
                if ( 'Etc' === $zone[0] && in_array( $zone[1], array( 'UCT', 'GMT', 'GMT0', 'GMT+0', 'GMT-0', 'Greenwich', 'Universal', 'Zulu' ) ) ) {
                        continue;
                }

                // This determines what gets set and translated - we don't translate Etc/* strings here, they are done later
                $exists = array(
                        0 => ( isset( $zone[0] ) && $zone[0] ) ? true : false,
                        1 => ( isset( $zone[1] ) && $zone[1] ) ? true : false,
                        2 => ( isset( $zone[2] ) && $zone[2] ) ? true : false
                );
                $exists[3] = ( $exists[0] && 'Etc' !== $zone[0] ) ? true : false;
                $exists[4] = ( $exists[1] && $exists[3] ) ? true : false;
                $exists[5] = ( $exists[2] && $exists[3] ) ? true : false;

                $zonen[] = array(
                        'continent'   => ( $exists[0] ? $zone[0] : '' ),
                        'city'        => ( $exists[1] ? $zone[1] : '' ),
                        'subcity'     => ( $exists[2] ? $zone[2] : '' ),
                        't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ),
                        't_city'      => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ),
                        't_subcity'   => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' )
                );
        }
        usort( $zonen, '_wp_timezone_choice_usort_callback' );

        $structure = array();

        if ( empty( $selected_zone ) ) {
                $structure[] = '<option selected="selected" value="">' . __( 'Select a city' ) . '</option>';
        }

        foreach ( $zonen as $key => $zone ) {
                // Build value in an array to join later
                $value = array( $zone['continent'] );

                if ( empty( $zone['city'] ) ) {
                        // It's at the continent level (generally won't happen)
                        $display = $zone['t_continent'];
                } else {
                        // It's inside a continent group

                        // Continent optgroup
                        if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) {
                                $label = ( 'Etc' === $zone['continent'] ) ? __( 'Manual offsets' ) : $zone['t_continent'];
                                $structure[] = '<optgroup label="'. esc_attr( $label ) .'">';
                        }

                        // Add the city to the value
                        $value[] = $zone['city'];
                        if ( 'Etc' === $zone['continent'] ) {
                                if ( 'UTC' === $zone['city'] ) {
                                        $display = '';
                                } else {
                                        $display = str_replace( 'GMT', '', $zone['city'] );
                                        $display = strtr( $display, '+-', '-+' ) . ':00';
                                }
                                $display = sprintf( __( 'UTC %s' ), $display );
                        } else {
                                $display = $zone['t_city'];
                                if ( !empty( $zone['subcity'] ) ) {
                                        // Add the subcity to the value
                                        $value[] = $zone['subcity'];
                                        $display .= ' - ' . $zone['t_subcity'];
                                }
                        }
                }

                // Build the value
                $value = join( '/', $value );
                $selected = '';
                if ( $value === $selected_zone ) {
                        $selected = 'selected="selected" ';
                }
                $structure[] = '<option ' . $selected . 'value="' . esc_attr( $value ) . '">' . esc_html( $display ) . "</option>";

                // Close continent optgroup
                if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) {
                        $structure[] = '</optgroup>';
                }
        }

        return join( "\n", $structure );
}

/**
 * Strip close comment and close php tags from file headers used by WP
 * See http://core.trac.wordpress.org/ticket/8497
 *
 * @since 2.8
**/
function _cleanup_header_comment($str) {
        return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str));
}

/**
 * Permanently deletes posts, pages, attachments, and comments which have been in the trash for EMPTY_TRASH_DAYS.
 *
 * @since 2.9.0
 *
 * @return void
 */
function wp_scheduled_delete() {
        global $wpdb;

        $delete_timestamp = time() - (60*60*24*EMPTY_TRASH_DAYS);

        $posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);

        foreach ( (array) $posts_to_delete as $post ) {
                wp_delete_post($post['post_id']);
        }

        $comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);

        foreach ( (array) $comments_to_delete as $comment ) {
                wp_delete_comment($comment['comment_id']);
        }
}

/**
 * Parse the file contents to retrieve its metadata.
 *
 * Searches for metadata for a file, such as a plugin or theme.  Each piece of 
 * metadata must be on its own line. For a field spanning multple lines, it
 * must not have any newlines or only parts of it will be displayed.
 *
 * Some users have issues with opening large files and manipulating the contents
 * for want is usually the first 1kiB or 2kiB. This function stops pulling in
 * the file contents when it has all of the required data.
 *
 * The first 8kiB of the file will be pulled in and if the file data is not
 * within that first 8kiB, then the author should correct their plugin file
 * and move the data headers to the top.
 *
 * The file is assumed to have permissions to allow for scripts to read
 * the file. This is not checked however and the file is only opened for
 * reading.
 *
 * @since 2.9.0
 *
 * @param string $file Path to the file
 * @param bool $markup If the returned data should have HTML markup applied
 * @param string $context If specified adds filter hook "extra_<$context>_headers" 
 */
function get_file_data( $file, $default_headers, $context = '' ) {
        // We don't need to write to the file, so just open for reading.
        $fp = fopen( $file, 'r' );

        // Pull only the first 8kiB of the file in.
        $file_data = fread( $fp, 8192 );

        // PHP will close file handle, but we are good citizens.
        fclose( $fp );

        if( $context != '' ) {
                $extra_headers = apply_filters( "extra_$context".'_headers', array() );

                $extra_headers = array_flip( $extra_headers );
                foreach( $extra_headers as $key=>$value ) {
                        $extra_headers[$key] = $key;
                }
                $all_headers = array_merge($extra_headers, $default_headers);
        } else {
                $all_headers = $default_headers;
        }

        
        foreach ( $all_headers as $field => $regex ) {
                preg_match( '/' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field});
                if ( !empty( ${$field} ) )
                        ${$field} = _cleanup_header_comment( ${$field}[1] );
                else
                        ${$field} = '';
        }

        $file_data = compact( array_keys( $all_headers ) );
        
        return $file_data;
}
/*
 * Used internally to tidy up the search terms
 * 
 * @private
 * @since 2.9.0
 */
function _search_terms_tidy($t) {
        return trim($t, "\"\'\n\r ");
}
?>