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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 |
|---|---|
| 4153 | |
| 4154 | $id = (int) $id; |
| 4155 | |
| 4156 | wp_cache_delete($id, 'posts'); |
| 4157 | wp_cache_delete($id, 'post_meta'); |
| 4158 | |
| 4159 | if ( $clean_terms ) |
| 4160 | clean_object_term_cache($id, 'attachment'); |
| 4161 | |
| 4162 | do_action('clean_attachment_cache', $id); |
| 4163 | } |
| 4164 | |
| 4165 | // |
| 4166 | // Hooks |
| 4167 | // |
| 4168 | |
| 4169 | /** |
| 4170 | * Hook for managing future post transitions to published. |
| 4171 | * |