PHP代码实现简单的工厂模式方法

1、定义抽象基类

//家禽类abstract class Fowl{abstract public function eat();//吃方法}

2、定义子类

//牛类class Cattle extends Fowl{public function eat(){echo "我是牛，我吃草";}}//鸭类class Duck extends Fowl{public function eat(){echo "我是鸭，我吃鱼";}}//羊类class Sheep extends Fowl{public function eat(){echo "我是羊，我吃草";}}

3、工厂类

//工厂类class Factory{public static function create($fowlName){switch ($fowlName) {case 'Cattle':return new Cattle();break;case 'Duck':return new Duck();break;case 'Sheep':return new Sheep();break;}}}

4、客户端

$cattle = Factory::create('Cattle');$cattle->eat();//我是牛，我吃草$duck = Factory::create('Duck');$duck->eat();//我是鸭，我吃鱼$sheep = Factory::create('Sheep');$sheep->eat();//我是羊，我吃草

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