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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 |
|---|---|
| 4623 | wp_cache_delete( 'wp_get_archives', 'general' ); |
| 4624 | |
| 4625 | do_action( 'clean_post_cache', $post->ID, $post ); |
| 4626 | |
| 4627 | if ( is_post_type_hierarchical( $post->post_type ) ) |
| 4628 | wp_cache_delete( 'get_pages', 'posts' ); |
| 4629 | |
| 4630 | if ( 'page' == $post->post_type ) { |
| 4631 | wp_cache_delete( 'all_page_ids', 'posts' ); |
| 4632 | do_action( 'clean_page_cache', $post->ID ); |
| 4633 | } |
| 4634 | |
| 4635 | wp_cache_set( 'last_changed', microtime(), 'posts' ); |
| 4636 | } |
| 4637 | |
| 4638 | /** |
| 4639 | * Call major cache updating functions for list of Post objects. |
| 4640 | * |
| 4641 | * @package WordPress |