Online PHP editor | refs for JQks2

<?php class Something { public function action() { return 'Hello, World!'; } } $callable1 = [Something::class, 'action']; $callable2 = ['SomethingContainerName', 'action']; $callable3 = 'Something::action'; var_dump(is_callable($callable1)); var_dump(is_callable($callable2)); var_dump(is_callable($callable3)); function test(callable $callable) { return is_callable($callable); } var_dump(test($callable1)); var_dump(test($callable2)); var_dump(test($callable3));