用PHP代码实现简单的工厂模式,用PHP代码实现简单的工厂模式

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