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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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526 | while ( $next_posts = array_splice( $post_ids, 0, 20 ) ) { |
527 | $where = 'WHERE ID IN (' . join( ',', $next_posts ) . ')'; |
528 | $posts = $wpdb->get_results( "SELECT * FROM {$wpdb->posts} $where" ); |
529 |
|
530 | // Begin Loop. |
531 | foreach ( $posts as $post ) { |
532 | setup_postdata( $post ); |
533 |
|
534 | /** This filter is documented in wp-includes/feed.php */ |
535 | $title = apply_filters( 'the_title_rss', $post->post_title ); |
536 |
|
537 | /** |
538 | * Filters the post content used for WXR exports. |
539 | * |
540 | * @since 2.5.0 |
541 | * |
542 | * @param string $post_content Content of the current post. |
543 | */ |
544 | $content = wxr_cdata( apply_filters( 'the_content_export', $post->post_content ) ); |