Thinkphp5简单使用redis

<?php
/*
 *Purpose:首页
 *User:shenlin
 * Time:2018-10-22
 * */
namespace app\index\controller;
use think\Controller;
use think\Cache\Driver\Redis;
class Index extends Controller
{
    //redis
    public function redis()
    {
        //加载扩展
        $redis = new \Redis();
        //连接扩展
        $redis->connect("127.0.0.1","6379");

        //判断是否过期
        $redis_status = $redis->exists("info");
        if($redis_status==false){
            //缓存失效，重新存入
            //查询数据
            $Info = db("wangyi")->find();
            //转换成字符串，有利于存储
            $redisInfo = serialize($Info);
            //存入缓存
            $redis->set("info",$redisInfo);
            //设置缓存周期，60秒
            $redis->expire("info",60);
            var_dump("新存入的");
        }
        //获取缓存
        $result = unserialize($redis->get("info"));

        //当前时间
        var_dump(date("Y-m-d H:i:s",time()));
        var_dump($result);
        
    }
}