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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 |
---|---|
830 | clean_comment_cache($children); |
831 | } |
832 |
|
833 | // Delete metadata |
834 | $meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->commentmeta WHERE comment_id = %d ", $comment_id ) ); |
835 | if ( !empty($meta_ids) ) { |
836 | do_action( 'delete_commentmeta', $meta_ids ); |
837 | $in_meta_ids = "'" . implode("', '", $meta_ids) . "'"; |
838 | $wpdb->query( "DELETE FROM $wpdb->commentmeta WHERE meta_id IN ($in_meta_ids)" ); |
839 | do_action( 'deleted_commentmeta', $meta_ids ); |
840 | } |
841 |
|
842 | if ( ! $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->comments WHERE comment_ID = %d LIMIT 1", $comment_id) ) ) |
843 | return false; |
844 | do_action('deleted_comment', $comment_id); |
845 |
|
846 | $post_id = $comment->comment_post_ID; |
847 | if ( $post_id && $comment->comment_approved == 1 ) |
848 | wp_update_comment_count($post_id); |