有关php session和Cookie问题session_start开启后做什么事?-PHP Tutorial-php.cn

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有关php session和Cookie问题session_start开启后做什么事?

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Jun 23, 2016 pm 02:04 PM

是会在服务端去自动创建一个Session，然后再在客户端创建一个Cookie吗，求前辈
指教Session_start开启后客户端和服务端具体做的事，尽量详细点

回复讨论(解决方案)

在服务端创建一个文件来存储session（如果当前访问没有session）
再在浏览器建立一个cookies, PHPSESSID=session_id()

session由语句命令建立和销毁，客户端自动产生一个记录session id的cookie，无需命令设置

session建立后就可以使用$_SESSION(数组变量，全局)，可以赋值需要跨页面的数据，当然对于其他页面来说就是读取，其他页面也要声明session_start后才能使用$_SESSION

cookie中的session id无需理会，不需要做匹配或判断之类操作，但其他要保留到客户端的数据就需要使用相关的cookie语句赋值/读取，参考手册

这些咚咚函数语句不多，但要说明反而是长篇大论
你不如自己多写几个小程序测试理解更好，程序测试结果不理解再发上来问要比现在听废话好得多

session_start() 启用 session
session 中可保存用户的私用信息，别人是看不到的
是否在 cookie 中创建 sessionid 取决于相关设置

你只要知道 session 和 cookie 一样，都是用来保存用户私有信息的，只不过前者是保存在服务器中，后者是保存在浏览器中的

session_start() 启用 session
session 中可保存用户的私用信息，别人是看不到的
是否在 cookie 中创建 sessionid 取决于相关设置

你只要知道 session 和 cookie 一样，都是用来保存用户私有信息的，只不过前者是保存在服务器中，后者是保存在浏览器中的
哪里都见得到版主的回复！
版主真心帮助了许多人啊！

cookie，服务器会把cookie里的数据发送到客户端
session，服务器把数据保存在服务器，然后把一个ID发送到客户端

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