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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 209 | if ( ! $wpdb->query("DELETE FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1") ) |
| 210 | return false; |
| 211 | |
| 212 | $post_id = $comment->comment_post_ID; |
| 213 | if ( $post_id && $comment->comment_approved == 1 ) { |
| 214 | $count = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = '$post_id' AND comment_approved = '1'"); |
| 215 | $wpdb->query( "UPDATE $wpdb->posts SET comment_count = $count WHERE ID = '$post_id'" ); |
| 216 | } |
| 217 | |
| 218 | do_action('wp_set_comment_status', $comment_id, 'delete'); |
| 219 | return true; |
| 220 | } |
| 221 | |
| 222 | function get_comments_number( $post_id = 0 ) { |
| 223 | global $wpdb, $comment_count_cache, $id; |
| 224 | $post_id = (int) $post_id; |
| 225 | |
| 226 | if ( !$post_id ) |
| 227 | $post_id = (int) $id; |
| Line | Code |
| 787 | break; |
| 788 | case 'delete': |
| 789 | return wp_delete_comment($comment_id); |
| 790 | break; |
| 791 | default: |
| 792 | return false; |
| 793 | } |
| 794 | |
| 795 | if ($wpdb->query($query)) { |
| 796 | do_action('wp_set_comment_status', $comment_id, $comment_status); |
| 797 | |
| 798 | $comment = get_comment($comment_id); |
| 799 | $comment_post_ID = $comment->comment_post_ID; |
| 800 | $c = $wpdb->get_row( "SELECT count(*) as c FROM {$wpdb->comments} WHERE comment_post_ID = '$comment_post_ID' AND comment_approved = '1'" ); |
| 801 | if( is_object( $c ) ) |
| 802 | $wpdb->query( "UPDATE $wpdb->posts SET comment_count = '$c->c' WHERE ID = '$comment_post_ID'" ); |
| 803 | return true; |
| 804 | } else { |
| 805 | return false; |