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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 |
|---|---|
| 2412 | foreach ( $comments as $comment ) |
| 2413 | $statuses[$comment->comment_ID] = $comment->comment_approved; |
| 2414 | add_post_meta($post_id, '_wp_trash_meta_comments_status', $statuses); |
| 2415 | |
| 2416 | // Set status for all comments to post-trashed |
| 2417 | $result = $wpdb->update($wpdb->comments, array('comment_approved' => 'post-trashed'), array('comment_post_ID' => $post_id)); |
| 2418 | |
| 2419 | clean_comment_cache( array_keys($statuses) ); |
| 2420 | |
| 2421 | do_action('trashed_post_comments', $post_id, $statuses); |
| 2422 | |
| 2423 | return $result; |
| 2424 | } |
| 2425 | |
| 2426 | /** |
| 2427 | * Restore comments for a post from the trash |
| 2428 | * |
| 2429 | * @since 2.9.0 |
| 2430 | * @uses do_action() on 'untrash_post_comments' before trashing |