4-6-1.php

来自「php电子书」· PHP 代码 · 共 28 行

4-6-1.php<br>
//多态<br>
<?
interface User{ // User接口
	public function  getName();
	public function setName($_name);
}

class NormalUser implements User { // 实现接口的类.
	private $name;
	public function getName(){
		return $this->name;
	}
	public function setName($_name){
		$this->name = $_name;
	}
}

class UserAdmin{ //操作.
	public static function  ChangeUserName(User $_user,$_userName){
		$_user->setName($_userName);
	}
}

$normalUser = new NormalUser();
UserAdmin::ChangeUserName($normalUser,"Tom");//这里传入的是 NormalUser的实例.
echo $normalUser->getName();
?>