think\cache\driver\Redis::set PHP Method

    public function set($name, $value, $expire = null)
    {
        if (is_null($expire)) {
            $expire = $this->options['expire'];
        }
        if ($this->tag && !$this->has($name)) {
            $first = true;
        }
        $key = $this->getCacheKey($name);
        //对数组/对象数据进行缓存处理，保证数据完整性  byron sampson<[email protected]>
        $value = is_object($value) || is_array($value) ? json_encode($value) : $value;
        if (is_int($expire) && $expire) {
            $result = $this->handler->setex($key, $expire, $value);
        } else {
            $result = $this->handler->set($key, $value);
        }
        isset($first) && $this->setTagItem($key);
        return $result;
    }

 public function test()
 {
     $redis = new Redis();
     // $redis->connect('127.0.0.1',6379);
     $redis->set('test', 'hello world!');
     echo $redis->get("test");
 }