桥接模式

桥接模式:将抽象部分与它的实现部分分离,使它们都可以独立的变化.

 

 

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018/2/28
 * Time: 10:45
 */

namespace frontend\models;


 abstract  class Implementor
{

    public  abstract function Operation();

}

class ConcreteImplementorA  extends Implementor
{

    public   function Operation()
    {
        echo "实现方法A"."<br>";
    }

}

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018/2/28
 * Time: 10:47
 */

namespace frontend\models;


class ConcreteImplementorB extends Implementor
{

    public   function Operation()
    {
        echo "B类实现方法"."<br>";
    }

}

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2018/2/28
 * Time: 10:48
 */

namespace frontend\models;


class Abstraction
{

    private  $implementor;

    public  function __construct($implementor)
    {
        $this->implementor = $implementor;
    }

    public  function Operation(){

        $this->implementor->Operation();

    }
}

$abstraction = new Abstraction(new ConcreteImplementorA());

$abstraction->Operation();


$abstraction = new Abstraction(new ConcreteImplementorB());

$abstraction->Operation();