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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 |
|---|---|
| 413 | if ( $delete ) { |
| 414 | /** |
| 415 | * Fires once a post revision has been deleted. |
| 416 | * |
| 417 | * @since 2.6.0 |
| 418 | * |
| 419 | * @param int $revision_id Post revision ID. |
| 420 | * @param object|array $revision Post revision object or array. |
| 421 | */ |
| 422 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 423 | } |
| 424 | |
| 425 | return $delete; |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * Returns all revisions of specified post. |
| 430 | * |
| 431 | * @since 2.6.0 |