thinkphp使用Redis

 connect($host, $port);
        self::$_handle->auth($auth);
    }

    private function __clone()
    {
        // TODO: Implement __clone() method.
    }

    static public function getInstance()
    {
        if (is_null(self::$_instance) || isset(self::$_instance))
        {
            self::$_instance = new self();
        }
        return self::$_instance;
    }

    public function selectDB($db)
    {
        self::$_handle->select($db);
    }

    public function get($key)
    {
        return self::$_handle->get($key);
    }

    public function del($key)
    {
        return self::$_handle->del($key);
    }

    public function setex($key, $time, $value)
    {
        return self::$_handle->setex($key, $time, $value);
    }
}