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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 |
|---|---|
| 634 | if ( $delete ) { |
| 635 | /** |
| 636 | * Fires once a post revision has been deleted. |
| 637 | * |
| 638 | * @since 2.6.0 |
| 639 | * |
| 640 | * @param int $revision_id Post revision ID. |
| 641 | * @param WP_Post $revision Post revision object. |
| 642 | */ |
| 643 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 644 | } |
| 645 | |
| 646 | return $delete; |
| 647 | } |
| 648 | |
| 649 | /** |
| 650 | * Returns all revisions of specified post. |
| 651 | * |
| 652 | * @since 2.6.0 |