<?php

/**

 * 设计模式之策略模式

 * User: 小狗蛋儿

 * Date: 2017/11/20

 * Time: 20:44

 *

 * 各个算法之间相互替换，不会影响到使用算法的客户

 */

/**

 * Class Xianjin

 * 现金收费类

 */

abstract class Xianjin{

    abstract function Jine($rmb);

}

class A extends Xianjin{

    public  function Jine($rmb)

    {

        echo "0";

        return $rmb;

    }

}

class B extends  Xianjin{

    public $zhe="0.8";

    public  function Jine($rmb)

    {

        echo "1";

        return $rmb*$this->zhe;

    }

}

class C extends  Xianjin{

    public  $a1=300;

    public  $a2=60;

    public  function  Jine($rmb)

    {

        echo "3";

        $result=$rmb;

        if ($rmb>=$this->a1){

            $result=$rmb-floor($rmb/$this->a1)*$this->a2;

        }

        return $result;

    }

}

class ContentCax{

    public $ceshi;

    public  function __Construct($types){

           switch ($types){

               case "0":

                   $this->ceshi=new A();

                   break;

               case "1":

                   $this->ceshi=new B();

                   break;

               case "2":

                   $this->ceshi=new C();

                   break;

           }

        }

        public  function GetRestult($rmb){

                return $this->ceshi->Jine($rmb);

        }

}

/***

 * 客户类

 */

class ssd{

    public  function  ceshi(){

            $a=new ContentCax("2");

            $a->GetRestult("100");

    }

}

$ssd=new ssd();

$ssd->ceshi();