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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 |
|---|---|
| 3553 | function wp_delete_post_revision( $revision_id ) { |
| 3554 | if ( !$revision = wp_get_post_revision( $revision_id ) ) |
| 3555 | return $revision; |
| 3556 | |
| 3557 | $delete = wp_delete_post( $revision->ID ); |
| 3558 | if ( is_wp_error( $delete ) ) |
| 3559 | return $delete; |
| 3560 | |
| 3561 | if ( $delete ) |
| 3562 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 3563 | |
| 3564 | return $delete; |
| 3565 | } |
| 3566 | |
| 3567 | /** |
| 3568 | * Returns all revisions of specified post. |
| 3569 | * |
| 3570 | * @package WordPress |
| 3571 | * @subpackage Post_Revisions |