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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 |
|---|---|
| 5722 | wp_cache_delete( 'all_page_ids', 'posts' ); |
| 5723 | |
| 5724 | /** |
| 5725 | * Fires immediately after the given page's cache is cleaned. |
| 5726 | * |
| 5727 | * @since 2.5.0 |
| 5728 | * |
| 5729 | * @param int $post_id Post ID. |
| 5730 | */ |
| 5731 | do_action( 'clean_page_cache', $post->ID ); |
| 5732 | } |
| 5733 | |
| 5734 | wp_cache_set( 'last_changed', microtime(), 'posts' ); |
| 5735 | } |
| 5736 | |
| 5737 | /** |
| 5738 | * Call major cache updating functions for list of Post objects. |
| 5739 | * |
| 5740 | * @since 1.5.0 |