php适配器模式

<?php
/**
 * Created by PhpStorm.
 * User: v.liumin
 * Date: 2016/8/10
 * Time: 11:17
 */
interface Target {
    public function simpleMethod1();
    public function simpleMethod2();
}

class Adaptree{
    public function simpleMethod1(){
        echo 22;
    }
}

class Adapter implements  Target {
    private $adaptree;

    public function __construct()
    {
        $this->adaptree = new Adaptree();
    }

    public function simpleMethod1()
    {
        $this->adaptree->simpleMethod1();
    }

    public function simpleMethod2()
    {
        echo 22;
    }

}