--TEST-- ReflectionClass::IsInstantiable() --FILE-- <?php class privateCtorOld { private function privateCtorOld() {} } $reflectionClass = new ReflectionClass("privateCtorOld"); var_dump($reflectionClass->IsInstantiable('X')); var_dump($reflectionClass->IsInstantiable(0, null)); ?> --EXPECTF-- Warning: Wrong parameter count for ReflectionClass::isInstantiable() in %s on line 7 NULL Warning: Wrong parameter count for ReflectionClass::isInstantiable() in %s on line 8 NULL