php session失效和串用户的问题
一开始在有的机器上session存储的用户名，跨页面后总是丢失
不知道是不是header转向的问题
后来加上了个session_id(SID);
丢失情况没了，但新问题出来了
过段时间，刷新页面session变成另一个用户的用户名了
估计是session超时失效后，串到别用户那去了？
===============================================
有朋友知道是怎么回事，如何解决吗？
谢谢
------解决方案--------------------
有的机器是什么意思，你有多台机器吗？
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