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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 |
|---|---|
| 4642 | wp_cache_delete( 'wp_get_archives', 'general' ); |
| 4643 | |
| 4644 | do_action( 'clean_post_cache', $post->ID, $post ); |
| 4645 | |
| 4646 | if ( is_post_type_hierarchical( $post->post_type ) ) |
| 4647 | wp_cache_delete( 'get_pages', 'posts' ); |
| 4648 | |
| 4649 | if ( 'page' == $post->post_type ) { |
| 4650 | wp_cache_delete( 'all_page_ids', 'posts' ); |
| 4651 | do_action( 'clean_page_cache', $post->ID ); |
| 4652 | } |
| 4653 | } |
| 4654 | |
| 4655 | /** |
| 4656 | * Call major cache updating functions for list of Post objects. |
| 4657 | * |
| 4658 | * @package WordPress |
| 4659 | * @subpackage Cache |
| 4660 | * @since 1.5.0 |