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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 |
|---|---|
| 3828 | delete_post_meta( $post_id, '_wp_trash_meta_comments_status' ); |
| 3829 | |
| 3830 | /** |
| 3831 | * Fires after comments are restored for a post from the Trash. |
| 3832 | * |
| 3833 | * @since 2.9.0 |
| 3834 | * |
| 3835 | * @param int $post_id Post ID. |
| 3836 | */ |
| 3837 | do_action( 'untrashed_post_comments', $post_id ); |
| 3838 | } |
| 3839 | |
| 3840 | /** |
| 3841 | * Retrieve the list of categories for a post. |
| 3842 | * |
| 3843 | * Compatibility layer for themes and plugins. Also an easy layer of abstraction |
| 3844 | * away from the complexity of the taxonomy layer. |
| 3845 | * |
| 3846 | * @since 2.1.0 |