* 获取用户缓存生存时间(秒) | 传入参 | 参数标识 | | 说明 | | --- | --- | --- |--- | | u_id | 0 | 必填 | 用户索引 | | 回调参 | 说明 | | --- | --- | | [code] | 授权码 | *案例 ~~~ $ttl = $DouYin->time($u_id); ~~~