Detailed explanation and cases of PHP bridge mode

/**       
 * Created by Sublime.       
 * User: Ryan       
 * Date: 2018/1/22       
 * File：Bridge.php       
 */        
    
/** 抽象一个主食类      
 *  abstract Food          
 */    
abstract Class Food  
{  
    public $dishes; // 一开始会赋值对象  
    abstract function MakeFood();  
}  
  
/** 盖浇饭类 继承主食类     
 *  Rice          
 */    
Class Rice extends Food  
{  
    function MakeFood()  
    {  
        $this->dishes->MakeDishes();  
        echo "盖浇饭<br/>";  
    }  
}  
  
/** 盖浇面类 继承主食类     
 *  Noodle          
 */  
Class Noodle extends Food  
{  
    function MakeFood()  
    {  
        $this->dishes->MakeDishes();  
        echo "盖浇面<br/>";  
    }  
}  
  
  
/** 菜肴接口     
 *  interface Dishes          
 */  
interface Dishes  
{  
    function MakeDishes();  
}  
  
/** 青椒肉丝类 继承菜肴接口   
 *  QJRS          
 */  
Class QJRS implements Dishes  
{  
   function MakeDishes(){  
       echo "青椒肉丝";  
   }      
}  
  
/** 土豆牛肉类 继承菜肴接口   
 *  TDNR          
 */  
Class TDNR implements Dishes  
{  
   function MakeDishes(){  
       echo "土豆牛肉";  
   }      
}

<?php    
// 桥接模式 index.php  
header("Content-Type:text/html;charset=utf-8");  
require_once "Bridge.php";    
  
// 要一份盖浇饭  
$rice = new Rice();  
  
// 浇头要 青椒肉丝  
$rice->dishes = new QJRS();  
  
// 上菜  
$rice->MakeFood();  
  
// 同样的要一份盖浇饭  
$rice = new Rice();  
  
// 这次改了浇头要 土豆牛肉  
$rice->dishes = new TDNR();  
  
// 上菜  
$rice->MakeFood();