private static function getOrderedClasses(array $classes) { $map = array(); self::$seen = array(); foreach ($classes as $class) { try { $reflectionClass = new \ReflectionClass($class); } catch (\ReflectionException $e) { throw new \InvalidArgumentException(sprintf('Unable to load class "%s"', $class)); } $map = array_merge($map, self::getClassHierarchy($reflectionClass)); } return $map; }