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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 |
---|---|
522 | * @uses $wpdb |
523 | * @uses do_action() Calls 'delete_comment' hook on comment ID |
524 | * @uses do_action() Calls 'wp_set_comment_status' hook on comment ID with 'delete' set for the second parameter |
525 | * |
526 | * @param int $comment_id Comment ID |
527 | * @return bool False if delete comment query failure, true on success |
528 | */ |
529 | function wp_delete_comment($comment_id) { |
530 | global $wpdb; |
531 | do_action('delete_comment', $comment_id); |
532 |
|
533 | $comment = get_comment($comment_id); |
534 |
|
535 | if ( ! $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->comments WHERE comment_ID = %d LIMIT 1", $comment_id) ) ) |
536 | return false; |
537 |
|
538 | $post_id = $comment->comment_post_ID; |
539 | if ( $post_id && $comment->comment_approved == 1 ) |
540 | wp_update_comment_count($post_id); |