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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 |
|---|---|
| 3844 | } |
| 3845 | |
| 3846 | /** |
| 3847 | * Fires before comments are restored for a post from the Trash. |
| 3848 | * |
| 3849 | * @since 2.9.0 |
| 3850 | * |
| 3851 | * @param int $post_id Post ID. |
| 3852 | */ |
| 3853 | do_action( 'untrash_post_comments', $post_id ); |
| 3854 | |
| 3855 | // Restore each comment to its original status. |
| 3856 | $group_by_status = array(); |
| 3857 | foreach ( $statuses as $comment_id => $comment_status ) { |
| 3858 | $group_by_status[ $comment_status ][] = $comment_id; |
| 3859 | } |
| 3860 | |
| 3861 | foreach ( $group_by_status as $status => $comments ) { |
| 3862 | // Sanity check. This shouldn't happen. |