redis.php

<?php

/**
 * check if can connect redis
 * Class RedisInstance
 */
class RedisInstance{

    private static $_instance;

    private static $_connectSource;

    private function __construct(){

    }

    /**
     * init redis
     * @return mixed
     * @author deng    (2019/9/4 17:52)
     */
    public static function getInstance(){
        if (!(static::$_instance instanceof \Redis)) {
            static::$_instance = new \Redis();
            self::getInstance()->connect('127.0.0.1', 6379, 9000);
        }
        return static::$_instance;
    }

    /**
     * Redis is can connect
     * @return string
     * @author deng    (2019/9/4 17:53)
     */
    public static function connect()
    {
        // 如果连接资源不存在，则进行资源连接
        if (!self::$_connectSource)
        {
            //@return bool TRUE on success, FALSE on error.
            self::$_connectSource = self::getInstance()->connect('127.0.0.1',6379,9000);
            // 没有资源返回
            if (!self::$_connectSource)
            {
                return 'Redis Server Connection Fail';
            }
        }
        return self::$_connectSource;
    }
}

//RedisInstance::getInstance()->set('test','test');