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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 |
|---|---|
| 4988 | function wp_delete_post_revision( $revision_id ) { |
| 4989 | if ( !$revision = wp_get_post_revision( $revision_id ) ) |
| 4990 | return $revision; |
| 4991 | |
| 4992 | $delete = wp_delete_post( $revision->ID ); |
| 4993 | if ( is_wp_error( $delete ) ) |
| 4994 | return $delete; |
| 4995 | |
| 4996 | if ( $delete ) |
| 4997 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 4998 | |
| 4999 | return $delete; |
| 5000 | } |
| 5001 | |
| 5002 | /** |
| 5003 | * Returns all revisions of specified post. |
| 5004 | * |
| 5005 | * @package WordPress |
| 5006 | * @subpackage Post_Revisions |