$ _SESSION，PHP，iframe，未获取SESSION变量 [英] $_SESSION, PHP, iframe, not getting the SESSION variables

问题描述

我正在创建一个非常简单的基于PHP的程序来进行仓储，但后端程序却相当复杂.

I m creating a very simple PHP-based program for warehousing but quite complicated back-end process.

1. 我有一个登录页面，该页面直接转到授权页面，在该页面中它首次设置session_name，session_start()并设置会话变量.

授权页面之后，它转到main.php页面，该页面的左侧是菜单(链接)的表，我也做了session_name()<-与从中创建的名称相同(1)，然后开始会话.

After the authorization page, it goes to the main.php page that is a table with left hand side for menu (links) that I also did session_name() <-- same name as the one created from (1), and start the session.

主页的右侧是当用户单击左侧的链接时显示页面的iframe.我也做了session_name()<-与(1)中创建的名字相同的名字，然后开始会话.

On the right hand side of the main page is the iframe that display the page when user click the links on the left. I also did session_name() <-- same name as the one created from (1), and start the session.

问题:

main.php可以，它可以完美读取会话变量，但是iframe无法获取会话变量(我尝试print_r($_SESSION)，然后变成空).我尝试了var_dump(session_name("abc"))，其中"abc"是我在(1)中使用的会话名称，它确实显示"abc"，尝试了(isset($_SESSION))并返回true ...所以我不知道我在做什么错...

Problem:

main.php is ok, it reads the session variable perfectly, but the iframe couldn't get the session variables (i tried to print_r($_SESSION), and came up empty). I tried var_dump(session_name("abc")), where "abc" is the session name that i used in (1), and it does show "abc", tried (isset($_SESSION)) and returns true... so I don't know what am I doing wrong...

对不起，我想我可能已经找到了罪魁祸首...这是我这方面的逻辑错误...当用户级别未经授权使用时，我有这种情况可以检查我创建的用于销毁会话的每个php页面当前页面.非常糟糕.非常感谢您的帮助！！

I m sorry guys, i think i may have found the culprit... it is a logic error on my side... i have this condition to check every php page i created to destroy session when the user level is not authorized to use this current page. My bad.. thanks so much for your help guys!!

推荐答案

确保session_start()在所有页面上:

session_start()创建会话或恢复当前会话，该会话基于通过GET或POST请求传递或通过cookie传递的会话标识符.

session_start() creates a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via a cookie.

请参见 PHP手册参考

要控制$ _SESSION的内容，请尝试在所有ifreame页面中放入代码:

To control the contents of the $_SESSION try to put in all ifreame pages the code:

<?php 
   session_start();

   echo '<pre>';
   var_dump($_SESSION);
   echo '</pre>';

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