获取提示：对象类型

class User{
	
	public function __construct($name,$sex,$height){
		$this->name=$name;
		$this->sex=$sex;
		$this->height=$height;
		}
	
	public function show(){
		echo "姓名：".$this->name." 性别：".$this->sex;
		}
	
}

class Book{
	
	public function __construct($author,$prince,$public){
		$this->author=$author;
		$this->prince=$prince;
		$this->public=$public;
		}
	
	public function show(){
		echo "作者：".$this->author." 发布：".$this->public;
		}
	
}

class UserAdmin{
	public static function changeName(Book $name){
		$name->show();
	}
}

 
$user = new User("黎明","男","170");
UserAdmin::changeName($user);