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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 |
|---|---|
| 2859 | |
| 2860 | /** |
| 2861 | * Filters whether a post untrashing should take place. |
| 2862 | * |
| 2863 | * @since 4.9.0 |
| 2864 | * |
| 2865 | * @param bool $untrash Whether to go forward with untrashing. |
| 2866 | * @param WP_Post $post Post object. |
| 2867 | */ |
| 2868 | $check = apply_filters( 'pre_untrash_post', null, $post ); |
| 2869 | if ( null !== $check ) { |
| 2870 | return $check; |
| 2871 | } |
| 2872 | |
| 2873 | /** |
| 2874 | * Fires before a post is restored from the trash. |
| 2875 | * |
| 2876 | * @since 2.9.0 |
| 2877 | * |