设计模式PHP实现之------委托模式

<?php
/*
    Delegation 委托模式
*/
require_once ‘YiFang.php‘;
require_once ‘BingFang.php‘;

$yi_fang = new YiFang(new BingFang());

$yi_fang->doWork();

<?php
class YiFang
{
    private $delegation;

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

    public function doWork()
    {
        $this->delegation->doRealWork();
    }
}

<?php
class BingFang
{
    public function doRealWork(){
        echo ‘其实是我做的,我是 ‘ . __class__;
    }
}