--TEST-- Ensure the ReflectionClass constructor triggers autoload. --FILE-- <?php spl_autoload_register(function ($name) { echo "In autoload: "; var_dump($name); }); try { new ReflectionClass("UndefC"); } catch (ReflectionException $e) { echo $e->getMessage(); } ?> --EXPECT-- In autoload: string(6) "UndefC" Class "UndefC" does not exist