<?php

/**

 * 适配器模式

 * 适配器模式是将某个对象的接口适配为另一个对象所期望的接口

 *

 * 在需要转化一个对象的接口用于另一个对象时，最好实现适配器模式对象

 */

class Weather {

    public $_info = NULL;

    public function __construct() {

        $this->_info = serialize(array('tep' => 24, 'wind' => 2));

    }

    public function show() {

        return unserialize($this->_info);

    }

}

//调用原始接口 序列化形式

$we = new Weather();

$array = $we->show();

echo '旧接口<br>';

echo "温度：" . $array['tep'] . "<br>";

echo "风力：" . $array['wind'] . "<br><br>";

class JsonAdapter extends Weather {

    public function __construct() {

        parent::__construct();

        $tmp = unserialize($this->_info);

        $this->_info = json_encode($tmp);

    }

    public function show() {

        return json_decode($this->_info,TRUE);

    }

}

//调用原始接口 序列化形式

$we = new JsonAdapter();

$array = $we->show();

echo '新接口<br>';

echo "温度：" . $array['tep'] . "<br>";

echo "风力：" . $array['wind'] . "<br>";