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php中session过期时间设置

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Release： 2016-06-13 10:49:00
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当我们用session保存了用户的登录信息之后，如果用户没有选择点击登出按钮而是选择了直接关闭浏览器，那在服务器端保存的session是否会长期存在呢？
 
答案是否定的！因为SESSION存在一个过期时间。如果session上一次修改的时间距离当前之间超过某个值的话，这个session将会被清除！
 
在php的配置文件php.ini中有这么个选项：
 
; After this number of seconds, stored data will be seen as 'garbage' and
 
; cleaned up by the garbage collection process.
 
session.gc_maxlifetime = 1440 www.2cto.com
 
也就是如果超过24分钟没有访问网站的话，服务器就把你的SESSION销毁了，此时你也就处于登出的状态了！
 
 
 
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Related labels：
php session keep information us time use user Log in of set up Expired
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