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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 |
|---|---|
| 4014 | $id = (int) $id; |
| 4015 | |
| 4016 | wp_cache_delete($id, 'posts'); |
| 4017 | wp_cache_delete($id, 'post_meta'); |
| 4018 | |
| 4019 | clean_object_term_cache($id, 'post'); |
| 4020 | |
| 4021 | wp_cache_delete( 'wp_get_archives', 'general' ); |
| 4022 | |
| 4023 | do_action('clean_post_cache', $id); |
| 4024 | |
| 4025 | if ( $children = $wpdb->get_col( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_parent = %d", $id) ) ) { |
| 4026 | foreach( $children as $cid ) |
| 4027 | clean_post_cache( $cid ); |
| 4028 | } |
| 4029 | |
| 4030 | if ( is_multisite() ) |
| 4031 | wp_cache_delete( $wpdb->blogid . '-' . $id, 'global-posts' ); |
| 4032 | } |