What is WordPress Hook: clean_taxonomy_cache
The clean_taxonomy_cache hook in WordPress is used to clear the cache for a specific taxonomy when it is updated or modified. This hook allows developers to perform additional actions or tasks when the taxonomy cache is cleaned.
Understanding the Hook: clean_taxonomy_cache
The clean_taxonomy_cache hook is located within the clean_term_cache function in the WordPress core. This function is responsible for clearing the cache for a specific taxonomy when it is updated, ensuring that the cached data is kept up to date.
Hook Parameters (if applicable): clean_taxonomy_cache
The clean_taxonomy_cache hook does not accept any arguments or parameters. It is a simple action hook that allows developers to execute custom code when the taxonomy cache is cleared.
Hook Doesn’t Work: clean_taxonomy_cache
If the clean_taxonomy_cache hook doesn’t seem to be working as expected, it could be due to a conflict with other plugins or themes that are also modifying the taxonomy cache. It is recommended to deactivate other plugins and switch to a default theme to troubleshoot the issue.
Best Practices & Usage Notes (if applicable): clean_taxonomy_cache
When using the clean_taxonomy_cache hook, it is important to keep in mind that any code added to this hook should be lightweight and efficient, as it is directly related to cache management. Additionally, developers should avoid making any direct database queries within this hook to prevent potential performance issues.
Usage Example: clean_taxonomy_cache
“`php
function custom_clean_taxonomy_cache( $term_id, $taxonomy ) {
// Perform custom actions when the taxonomy cache is cleaned
}
add_action( ‘clean_taxonomy_cache’, ‘custom_clean_taxonomy_cache’, 10, 2 );
“`