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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 |
|---|---|
| 1012 | } |
| 1013 | |
| 1014 | // Delete metadata |
| 1015 | $meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->commentmeta WHERE comment_id = %d", $comment_id ) ); |
| 1016 | foreach ( $meta_ids as $mid ) |
| 1017 | delete_metadata_by_mid( 'comment', $mid ); |
| 1018 | |
| 1019 | if ( ! $wpdb->delete( $wpdb->comments, array( 'comment_ID' => $comment_id ) ) ) |
| 1020 | return false; |
| 1021 | do_action('deleted_comment', $comment_id); |
| 1022 | |
| 1023 | $post_id = $comment->comment_post_ID; |
| 1024 | if ( $post_id && $comment->comment_approved == 1 ) |
| 1025 | wp_update_comment_count($post_id); |
| 1026 | |
| 1027 | clean_comment_cache($comment_id); |
| 1028 | |
| 1029 | do_action('wp_set_comment_status', $comment_id, 'delete'); |
| 1030 | wp_transition_comment_status('delete', $comment->comment_approved, $comment); |