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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 |
|---|---|
| 1387 | return; |
| 1388 | |
| 1389 | $post_id = $post->ID; |
| 1390 | |
| 1391 | $statuses = get_post_meta($post_id, '_wp_trash_meta_comments_status', true); |
| 1392 | |
| 1393 | if ( empty($statuses) ) |
| 1394 | return true; |
| 1395 | |
| 1396 | do_action('untrash_post_comments', $post_id); |
| 1397 | |
| 1398 | // Restore each comment to its original status |
| 1399 | $group_by_status = array(); |
| 1400 | foreach ( $statuses as $comment_id => $comment_status ) |
| 1401 | $group_by_status[$comment_status][] = $comment_id; |
| 1402 | |
| 1403 | foreach ( $group_by_status as $status => $comments ) { |
| 1404 | // Sanity check. This shouldn't happen. |
| 1405 | if ( 'post-trashed' == $status ) |