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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 |
|---|---|
| 4917 | function wp_delete_post_revision( $revision_id ) { |
| 4918 | if ( !$revision = wp_get_post_revision( $revision_id ) ) |
| 4919 | return $revision; |
| 4920 | |
| 4921 | $delete = wp_delete_post( $revision->ID ); |
| 4922 | if ( is_wp_error( $delete ) ) |
| 4923 | return $delete; |
| 4924 | |
| 4925 | if ( $delete ) |
| 4926 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 4927 | |
| 4928 | return $delete; |
| 4929 | } |
| 4930 | |
| 4931 | /** |
| 4932 | * Returns all revisions of specified post. |
| 4933 | * |
| 4934 | * @package WordPress |
| 4935 | * @subpackage Post_Revisions |