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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 |
|---|---|
| 5681 | /** |
| 5682 | * Fires when a post is transitioned from one status to another. |
| 5683 | * |
| 5684 | * @since 2.3.0 |
| 5685 | * |
| 5686 | * @param string $new_status New post status. |
| 5687 | * @param string $old_status Old post status. |
| 5688 | * @param WP_Post $post Post object. |
| 5689 | */ |
| 5690 | do_action( 'transition_post_status', $new_status, $old_status, $post ); |
| 5691 | |
| 5692 | /** |
| 5693 | * Fires when a post is transitioned from one status to another. |
| 5694 | * |
| 5695 | * The dynamic portions of the hook name, `$new_status` and `$old_status`, |
| 5696 | * refer to the old and new post statuses, respectively. |
| 5697 | * |
| 5698 | * Possible hook names include: |
| 5699 | * |