PHP代碼實現(xiàn)簡單的工廠模式方法

1、定義抽象基類

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

2、定義子類

//牛類 class Cattle extends Fowl { 	public function eat() 	{ 		echo "我是牛，我吃草"; 	} } //鴨類 class Duck extends Fowl { 	public function eat() 	{ 		echo "我是鴨，我吃魚"; 	} } //羊類 class Sheep extends Fowl { 	public function eat() 	{ 		echo "我是羊，我吃草"; 	} }

3、工廠類

//工廠類 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、客戶端

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