<?php

/**
 *接口类和抽象类以及设计模式
 */
echo "测试环境";
echo "<br>";
echo "<hr>";

class Memcache
//class Reids
{
    public function set($k,$v)
    {

    }

    public function get($k)
    {

    }
    public function delete($k)
    {

    }
}

//$cache = new Memcache();
//$cache = new Reids();




class Cache
{
    public static function factory()
    {
        return new Memcache();
//        return new Reids();
    }


}

$cache =Cache::factory();
$cache->set();