Using WordPress ‘clean_pre()’ PHP function
Accepts matches array from preg_replace_callback in wpautop() or a string.
array
Using WordPress ‘clean_category_cache()’ PHP function
The `clean_category_cache()` function in WordPress removes the cached category data based on a specific ID passed as an argument
Using WordPress ‘do_action_deprecated()’ PHP function
The `do_action_deprecated()` function in WordPress allows you to trigger a deprecation notice and fire the original hook when using an action hook that has been deprecated
Using WordPress ‘delete_user_option()’ PHP function
The `delete_user_option()` function in WordPress allows deleting user options with a global blog capability