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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 707 | return false; |
| 708 | |
| 709 | global $wpdb; |
| 710 | $post_ids = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT post_id FROM $wpdb->postmeta WHERE meta_key = %s", $post_meta_key)); |
| 711 | if ( $post_ids ) { |
| 712 | $postmetaids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE meta_key = %s", $post_meta_key ) ); |
| 713 | $in = implode( ',', array_fill(1, count($postmetaids), '%d')); |
| 714 | do_action( 'delete_postmeta', $postmetaids ); |
| 715 | $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN($in)", $postmetaids )); |
| 716 | do_action( 'deleted_postmeta', $postmetaids ); |
| 717 | foreach ( $post_ids as $post_id ) |
| 718 | wp_cache_delete($post_id, 'post_meta'); |
| 719 | return true; |
| 720 | } |
| 721 | return false; |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * Retrieve post meta fields, based on post ID. |
| Line | Code |
| 1227 | $wpdb->query( "DELETE FROM $wpdb->comments WHERE comment_ID IN($in_comment_ids)" ); |
| 1228 | do_action( 'deleted_comment', $comment_ids ); |
| 1229 | } |
| 1230 | |
| 1231 | $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $postid )); |
| 1232 | if ( !empty($post_meta_ids) ) { |
| 1233 | do_action( 'delete_postmeta', $post_meta_ids ); |
| 1234 | $in_post_meta_ids = "'" . implode("', '", $post_meta_ids) . "'"; |
| 1235 | $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id IN($in_post_meta_ids)" ); |
| 1236 | do_action( 'deleted_postmeta', $post_meta_ids ); |
| 1237 | } |
| 1238 | |
| 1239 | do_action( 'delete_post', $postid ); |
| 1240 | $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $postid )); |
| 1241 | do_action( 'deleted_post', $postid ); |
| 1242 | |
| 1243 | if ( 'page' == $post->post_type ) { |
| 1244 | clean_page_cache($postid); |
| 1245 | |
| Line | Code |
| 2863 | $wpdb->query( "DELETE FROM $wpdb->comments WHERE comment_ID IN($in_comment_ids)" ); |
| 2864 | do_action( 'deleted_comment', $comment_ids ); |
| 2865 | } |
| 2866 | |
| 2867 | $post_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d ", $post_id )); |
| 2868 | if ( !empty($post_meta_ids) ) { |
| 2869 | do_action( 'delete_postmeta', $post_meta_ids ); |
| 2870 | $in_post_meta_ids = "'" . implode("', '", $post_meta_ids) . "'"; |
| 2871 | $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id IN($in_post_meta_ids)" ); |
| 2872 | do_action( 'deleted_postmeta', $post_meta_ids ); |
| 2873 | } |
| 2874 | |
| 2875 | do_action( 'delete_post', $post_id ); |
| 2876 | $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->posts WHERE ID = %d", $post_id )); |
| 2877 | do_action( 'deleted_post', $post_id ); |
| 2878 | |
| 2879 | $uploadpath = wp_upload_dir(); |
| 2880 | |
| 2881 | if ( ! empty($meta['thumb']) ) { |