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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 |
|---|---|
| 2700 | |
| 2701 | /** |
| 2702 | * Filters whether a post untrashing should take place. |
| 2703 | * |
| 2704 | * @since 4.9.0 |
| 2705 | * |
| 2706 | * @param bool $untrash Whether to go forward with untrashing. |
| 2707 | * @param WP_Post $post Post object. |
| 2708 | */ |
| 2709 | $check = apply_filters( 'pre_untrash_post', null, $post ); |
| 2710 | if ( null !== $check ) { |
| 2711 | return $check; |
| 2712 | } |
| 2713 | |
| 2714 | /** |
| 2715 | * Fires before a post is restored from the trash. |
| 2716 | * |
| 2717 | * @since 2.9.0 |
| 2718 | * |