tp6/app/common/Redis.php

<?php
//统一业务状态码 具体错误码再订
namespace app\common;

class Redis
{
    private static $_instance = null; //静态实例

    private function __construct(){ //私有的构造方法
        self::$_instance = new \Redis();
        $config = config("redis"); // redis配置信息
        self::$_instance->connect($config['host'],$config['port']);
        if(isset($config['password'])){
            self::$_instance->auth($config['password']);
        }
    }

    //获取静态实例
    public static  function getRedis()
    {
        if(!self::$_instance){
            new self;
        }
        return self::$_instance;
    }

    /*
     * 禁止clone
     */
    private function __clone()
    {}
}