hasAction()
hasAction(string $hook, callable|boolean $function_to_check = false) : boolean|integer
Check if any action has been registered for a hook.
Parameters
string | $hook | The name of the action hook. |
callable|boolean | $function_to_check | Optional. The callback to check for. Default false. |
Returns
boolean|integer —If $function_to_check is omitted, returns boolean for whether the hook has anything registered. When checking a specific function/method, the priority of that hook is returned, or false if the function/method is not attached. When using the $function_to_check argument, this function/method may return a non-boolean value that evaluates to false (e.g.) 0, so use the === operator for testing the return value.