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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 |
|---|---|
| 3641 | * Filters whether a post untrashing should take place. |
| 3642 | * |
| 3643 | * @since 4.9.0 |
| 3644 | * @since 5.6.0 The `$previous_status` parameter was added. |
| 3645 | * |
| 3646 | * @param bool|null $untrash Whether to go forward with untrashing. |
| 3647 | * @param WP_Post $post Post object. |
| 3648 | * @param string $previous_status The status of the post at the point where it was trashed. |
| 3649 | */ |
| 3650 | $check = apply_filters( 'pre_untrash_post', null, $post, $previous_status ); |
| 3651 | if ( null !== $check ) { |
| 3652 | return $check; |
| 3653 | } |
| 3654 | |
| 3655 | /** |
| 3656 | * Fires before a post is restored from the Trash. |
| 3657 | * |
| 3658 | * @since 2.9.0 |
| 3659 | * @since 5.6.0 The `$previous_status` parameter was added. |