Ticket #15322: post-class-test.php

<?php
/**
 * Testing the number of queries produced by using 
 * the post_class() function in custom loops.
 * Please uncomment blocks to show appropriate results.
 */
 
 
/*
 * Requiring wp-blog-header.php produces 6 queries.
 * This will be used as a base.
 */
require './wp-blog-header.php';


/* 
 * Basic Loop
 * Looping over queried posts produces 2 additional queries for a total of 8.
 */
// while( have_posts() ) {
        // the_post();
        // the_title( '<h2>', '</h2>' );
// }


/* 
 * Add post_class().
 * Adding post_class() to the loop produces no extra queries. Still at 8.
 */
// while( have_posts() ) {
        // the_post();
        // print '<div'; post_class(); print '>';
        // the_title( '<h2>', '</h2>' );
        // print '</div>';
// }


/*
 * Custom Query.
 * Quering for attachments adds 5 queries for a total of 11.
 */
// $posts = get_posts( array(
        // 'post_type' => 'attachment',
        // 'numberposts' => 5
        // ) );

        
/*
 * Attachments Loop.
 * This simple loop produces no extra queries. Still at 11.
 */
// foreach( (array) $posts as $post ) {
        // setup_postdata( $post );
        // the_title( '<h2>', '</h2>' );
        // print '</div>';
// }


/*
 * Attachments Loop add post_class().
 * The addition of post_class() for this custom loop produces
 * 2 queries per iteration:
 * 11 .......... Query for attachments.
 * 13 .......... 1 attachment  w/ post_class().
 * 15 .......... 2 attachments w/ post_class().
 * 17 .......... 3 attachments w/ post_class().
 * 19 .......... 4 attachments w/ post_class().
 * 21 .......... 5 attachments w/ post_class().
 */
// foreach( (array) $posts as $post ) {
        // setup_postdata( $post );
        // print '<div'; post_class(); print '>';
        // the_title( '<h2>', '</h2>' );
        // print '</div>';
// }


/* print total queries. */
print  get_num_queries() . ' queries.'; timer_stop( 1 );