关于PHP的session每次刷新都变更的问题
关于PHP的session每次刷新都变更的问题
今早发现session保存出现问题,传递不了session。看过PHP的文件都没有任何异常,也没有任何报错。
在网路上找到了一些文章,说是否php.ini文件里面的session.save_path没有设置好,然后查看了一下,也没发现有什么问题,路径是对的。查找了保存session文件的目录下面,发现每次刷新都会生成一个新的session文件,再尝试打印session_id() ,果真如此,每次刷新都会更新session_id()。
然后继续寻找网络上更多的资料,有些人说是cookie问题,因为session_id也是通过cookie去承载的,我尝试使用命令打印出cookie里面的值var_dump($_COOKIE),发现返回的值是array(0){} 没有任何东西,那就证明了是cookie出现了问题。
顺着整个思路去查找,最终发现是之前搞session跨域的时候更改了php.ini里面的session.cookie_domain 设置 ,如下
session.cookie_domain = ".zssd.mobi"
这里是设置了cookie只能在顶级域名zssd.mobi下生效,目的是为了解决跨域的问题,但其它域名却出现了问题(关于多个域名要实现session跨域可能需要用到其它方法解决了),只要把session.cookie_domain 设置为空就能正常使用sesssion_id了,具体修改如下
session.cookie_domain =
然后重启apache,问题解决。

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