'Google_Client', 'Google\\Service' => 'Google_Service', 'Google\\Service\\Resource' => 'Google_Service_Resource', 'Google\\Model' => 'Google_Model', 'Google\\Collection' => 'Google_Collection', ]; foreach ($servicesClassMap as $alias => $class) { class_alias($class, $alias); } } } spl_autoload_register(function ($class) { if (0 === strpos($class, 'Google_Service_')) { // Autoload the new class, which will also create an alias for the // old class by changing underscores to namespaces: // Google_Service_Speech_Resource_Operations // => Google\Service\Speech\Resource\Operations $classExists = class_exists($newClass = str_replace('_', '\\', $class)); if ($classExists) { return true; } } }, true, true);