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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 |
|---|---|
| 4974 | function wp_delete_post_revision( $revision_id ) { |
| 4975 | if ( !$revision = wp_get_post_revision( $revision_id ) ) |
| 4976 | return $revision; |
| 4977 | |
| 4978 | $delete = wp_delete_post( $revision->ID ); |
| 4979 | if ( is_wp_error( $delete ) ) |
| 4980 | return $delete; |
| 4981 | |
| 4982 | if ( $delete ) |
| 4983 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 4984 | |
| 4985 | return $delete; |
| 4986 | } |
| 4987 | |
| 4988 | /** |
| 4989 | * Returns all revisions of specified post. |
| 4990 | * |
| 4991 | * @package WordPress |
| 4992 | * @subpackage Post_Revisions |