WordPress requires you to define a
sanitize_callback for every option you create, which is a great for security purposes.
In Kirki depending on the control-type youâ€™re using weâ€™re automatically setting a
sanitize_callback for all your fields so you donâ€™t have to.
However, in case you want to override the default sanitization you can enter a callable function or method here. If you use a function then you must set this value to a string (the function name) and if you use a method then you must set this to an array. (example:
[ $object, $method_name ]).