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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 |
|---|---|
| 6946 | |
| 6947 | /** |
| 6948 | * Fires immediately after the given post's cache is cleaned. |
| 6949 | * |
| 6950 | * @since 2.5.0 |
| 6951 | * |
| 6952 | * @param int $post_id Post ID. |
| 6953 | * @param WP_Post $post Post object. |
| 6954 | */ |
| 6955 | do_action( 'clean_post_cache', $post->ID, $post ); |
| 6956 | |
| 6957 | if ( 'page' === $post->post_type ) { |
| 6958 | wp_cache_delete( 'all_page_ids', 'posts' ); |
| 6959 | |
| 6960 | /** |
| 6961 | * Fires immediately after the given page's cache is cleaned. |
| 6962 | * |
| 6963 | * @since 2.5.0 |
| 6964 | * |