<?php

/**
 * 产品角色类 产品为鸟类
 * User: huy
 * Date: 2017年3月21日
 * Time: 20:27
 */
class Bird{
 public $_head;
 public $_wing;
 public $_foot;

 function show(){
 echo "头:" . $this->_head . "<br/>";
 echo "翅膀:" . $this->_wing . "<br/>";
 echo "脚:" . $this->_foot;
 }
}