I have a PHP website I’m maintaining and I’ve confirmed that this worked at one point.
We have a website utilizing a login system which stores a logged in user’s information in a $_SESSION['user'] variable. The site used to log out the user when clicking /logout.php which essentially removed that portion of the session, then header() redirected to the homepage.
As of recently, the /logout.php file with session_start() at the top somehow doesn’t see the session information when print_r() is used to output it for debugging purposes.
If I go to another page, I see the session info just fine, but not on the logout page…which is exactly why I cannot remove the session info, because it’s not accessible.
I thought $_SESSION was global on the site until the browser was closed. I’ve never had this happen and I know the session instance was started on this page, so it’s weird that it’s not showing me the session data.
Any ideas? I’m totally stumped on this one!
Code: /logout.php
<?
#session_start() is inside this file
require_once($_SERVER['DOCUMENT_ROOT'].'/includes/config.php');
unset($_SESSION['user']);
header("location: /");
exit();
?>
The checking of $_SESSION['user'] is site-wide and I call to various items below it when needed for different things. Someone else built this site and I’m trying to debug why it’s not working for them all of a sudden.
Are you accessing logout.php from the same exact domain that you set the session to begin with (i.e. example.com vs. http://www.example.com/logout.php)
As for just unsetting specific session data, it would be best to call
session_destroy()and then unset your cookies to kill the session.