客服端禁用了cookie,服务端PHP仍旧使用session的方法
在php服务端当一张页面调用了session_start()函数之后,这张页面做了3件事情
1,在服务器端创建了一个sess_###############的文本文件(c:\window\tem\目录下面)
2,删除一起失效的sess_##########文本文件(此处就不在讲了)
3,把http头 和 网页的内容发给用户,其中http头中有set-cookie:PHPSESSIONID=123456789755jahasd这么样的一串数字,
当没有禁用cookie的时候,用户再次访问此网站的时候,浏览器会把PHPSESSIONID=123456789755jahasd,禁用的时候PHPSESSIONID=123456789755jahasd浏览器不会在带给服务器了
此时我们还要在用PHPSESSIONID=123456789755jahasd这个字符串的时候,我们可以把它放到每个超链接后面,作为get请求带给服务器
例如:
第一张页面:
<?php session_start(); $id = session_id(); //获取session_start()生成的session_id $_SESSION['web'] = '某php博客'; ?> <a href='http://www.scutephp.com?user=123&PHPSESSIONID=<?php echo $id;?>'>PHP建站经验</a>
第二种页面:
<?php if($id = $_GET['PHPSESSIONID']) { session_id($id); //让下面的session_start(),如果有这个文件就不要创建,否则就创建 } sesstion_start(); echo $_SESSION['web']; 同样可以把session取出来 ?>

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