使用URL传输SESSION信息_php技巧
在php的学习中,会话是我们常常用到的,那今天我们就来详细讲讲会话中的session;
一、session的工作机制:
当开启session后,服务器会在服务器中保存session文件,然后再浏览器保存session的id号,用于获取对应的session信息;
二、下面是文章的重点:基于URL传输session
如果按照基本的session方法传输session,那么会用到用户浏览器中的cookie,一旦用户关闭cookie,那么session就不起作用啦!所以接下来我们将要把session的id号放在网站的链接地址上,这样就不怕用户关闭cookie啦!
(我们以简单的用户登录做为一个例子,当用户开启cookie时,以cookie传输,关闭cookie时,以url传输)
1、建立用户登录页面,并在form的action地址后加上
SID当用户开启cookie时,输出空
SID当用户关闭cookie时,输出当前用户session信息,具体格式是 session_name=session_id;
2、建立判断用户是否登录页;
session_id()当含有参数时是指,以参数中的id为参考找到sessoin文件,注意session_id()必须在session_start()前面
3、建立退出登录页
首先将当前用户的session数据清空,然后删除该用户的session文件
到这整个基于url传输session的小案例就搞定啦!!
以上所述就是本文的全部内容了,希望大家能够喜欢。

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