class ExtendsException extends Exception { }

    class ThrowNewException {
        public function tryExeption() {
        try {
           try {
               throw new ExtendsException('catch!');
           } catch (ExtendsException $catch) {
         throw $catch;
         }
        } catch (Exception $throwNewException) {
       var_dump($throwNewException->getMessage());
      }
     }
    }

    $throwNewException = new ThrowNewException;
    $throwNewException->tryException();