Warning: session_set_save_handler() with SessionHandlerDB in multiple ProcessWire instance environment under PHP 7.2 · Issue #911 · processwire/processwire-issues · GitHub
![yii - PHP Warning: session_set_save_handler(): Cannot change save handler when session is active - Stack Overflow yii - PHP Warning: session_set_save_handler(): Cannot change save handler when session is active - Stack Overflow](https://i.stack.imgur.com/kYEYn.png)
yii - PHP Warning: session_set_save_handler(): Cannot change save handler when session is active - Stack Overflow
![session_set_save_handler(): Cannot change save handler when session is active · Issue #365 · apereo/phpCAS · GitHub session_set_save_handler(): Cannot change save handler when session is active · Issue #365 · apereo/phpCAS · GitHub](https://user-images.githubusercontent.com/5895566/108088405-b5001500-7078-11eb-926c-61bf94b7aeeb.png)
session_set_save_handler(): Cannot change save handler when session is active · Issue #365 · apereo/phpCAS · GitHub
![使用redis存储session无效,session_set_save_handler()一直返回false_session set save handler(): session handler's func_茶水间的饭桶的博客-CSDN博客 使用redis存储session无效,session_set_save_handler()一直返回false_session set save handler(): session handler's func_茶水间的饭桶的博客-CSDN博客](https://img-blog.csdnimg.cn/20210806145224434.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA3MTM3MjY=,size_16,color_FFFFFF,t_70)