What is WordPress Hook: clean_attachment_cache
The clean_attachment_cache hook in WordPress is used to clear the cache for attachments when they are updated or modified. This hook is essential for ensuring that any changes made to attachments are reflected accurately on the website.
Understanding the Hook: clean_attachment_cache
The clean_attachment_cache hook is located within the wp-includes/post.php file in WordPress. It is called after an attachment has been updated or modified, allowing developers to perform additional actions or clear the cache as needed.
Hook Parameters (if applicable): clean_attachment_cache
The clean_attachment_cache hook does not accept any arguments or parameters.
Hook Doesn’t Work: clean_attachment_cache
If the clean_attachment_cache hook doesn’t work as expected, it may be due to conflicts with other plugins or themes that are also modifying attachments. It is recommended to deactivate other plugins and switch to a default theme to troubleshoot the issue. Additionally, checking for any errors in the code that may be preventing the hook from functioning properly is advised.
Best Practices & Usage Notes (if applicable): clean_attachment_cache
When using the clean_attachment_cache hook, it is important to consider the performance implications, especially on websites with a large number of attachments. Developers should also be mindful of any other processes or functions that may be affected by clearing the attachment cache.
Usage Example: clean_attachment_cache
“`php
function custom_clean_attachment_cache( $post_id ) {
// Perform custom actions when the attachment cache is cleared
}
add_action( ‘clean_attachment_cache’, ‘custom_clean_attachment_cache’ );
“`