CI3.0.4 redis存取session时session_id不断刷新
本帖最后由 mchobby 于 2019-1-31 00:02 编辑尝试移植一份比较老旧的源码到新的环境上。旧环境在apache + php5 + redis下，表现一切正常。
现在移植到 php 7.2 + nginx + redis 4.0.3 下，发现定制化的redis驱动（只实现了构造函数、open、read、write）得到的session_id一直在变，导致controller里写的$this->session->userdata()总是获取到空的内容。
我在定制驱动里写了log_message输出，看log是这样：ERROR - 2019-01-30 22:48:12 --> successfully read tsk9hp41tpikb8r5lr7d1on1hs =
ERROR - 2019-01-30 22:48:12 --> successfully write tsk9hp41tpikb8r5lr7d1on1hs with content:
ERROR - 2019-01-30 22:48:25 --> successfully read gvdltgtnomvgs6tlr3jnm98osa =
ERROR - 2019-01-30 22:48:25 --> successfully write gvdltgtnomvgs6tlr3jnm98osa with content:
ERROR - 2019-01-30 22:48:38 --> successfully read keh9b77789f410slb329bjnaf3 =
ERROR - 2019-01-30 22:48:38 --> successfully write keh9b77789f410slb329bjnaf3 with content:
ERROR - 2019-01-30 22:48:51 --> successfully read krsg3h7iatnhqssamhvb5lqk4c =
ERROR - 2019-01-30 22:48:51 --> successfully write krsg3h7iatnhqssamhvb5lqk4c with content:
ERROR - 2019-01-30 22:49:04 --> successfully read h6f4tmnobpj0n46374dtc4il20 =
ERROR - 2019-01-30 22:49:04 --> successfully write h6f4tmnobpj0n46374dtc4il20 with content:
ERROR - 2019-01-30 22:49:17 --> successfully read n0fl5o0isq4cufc5773tsaasn6 =
ERROR - 2019-01-30 22:49:17 --> successfully write n0fl5o0isq4cufc5773tsaasn6 with content:
项目源代码以及定制化的session_redis_driver驱动在这里：https://github.com/roastduck/fortuna-oj/blob/new-env/application/libraries/Session/drivers/MY_Session_redis_driver.php。
请问我应该往哪个方向去寻找问题？提前谢谢帮助！
初步排除是redis驱动问题。
request header都能正确带上cookie中的session，但是服务器立刻下发了一个新的session……https://file.mchobby.top/ci_session_cookie.png
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