getFactory('Silver');//让白银工厂制造一个推荐商品$product = $factory->create('Commendatory');//得到白银会员的推荐商品echo $product->desc.'
';//获得一个青铜工厂$factory2 = CenterFactory::getFactory2('Bronze');//让青铜工厂制造一个打折商品$product2 = $factory2->create('Rebate');//得到青铜会员的推荐商品echo $product2->desc;