1 浏览器结束时其生命周期也同时结束,但是档案仍然存在于 /tmp/(sess_???)
2 下次重新开浏览器时会重新分配 sessionID,如果你使用 session_id() 把以前的 ID 带回来,则会去读取残存在 /tmp 处的 sess_???, 取回你之前所有已经设定的参数
3 可以在 php.ini 里修改 session 档案残存的时间
session.gc_maxlifetime = 1440 ; after this number of seconds, stored
data will be seen as 'garbage' and
cleaned up by the gc process
默认是 1440 秒,24分钟
使用 session 注意的存储路径问题
看看 php.ini 里对于 session 的设置
[Session]
session.save_handler = files ; handler used to store/retrieve data
session.save_path = /tmp ; argument passed to save_handler
in the case of files, this is the
path where data files are stored
默认是存于 /tmp 目录下,这个目录可不一定真有啊!!! 最好改为你的 php 安装路径,比如 c:/php

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