When I refresh page with session, I lose variable

Oni

Hey,

I'm new at using sessions and I've seem to run into a little problem.

After I authenticate, I set the session variables:

session_start();
$_SESSION['sid'] = session_id();
$_SESSION['ip'] = (getenv(HTTP_X_FORWARDED_FOR))
    ?  getenv(HTTP_X_FORWARDED_FOR)
    :  getenv(REMOTE_ADDR); 
$_SESSION['user'] = $user;

And then I redirect to another page with the following code:

session_start();
$ip = (getenv(HTTP_X_FORWARDED_FOR))
    ?  getenv(HTTP_X_FORWARDED_FOR)
    :  getenv(REMOTE_ADDR);
$user = $_SESSION['user'];
if($_SESSION['sid'] !== session_id() || $_SESSION['ip'] !== $ip)
    Header("Location: http://site.info/login.php");

Everything works fine. But when I access the same site again, my variable $user is blank so now the rest of the code returns blank results as well...

What to do?

Thanks!

Houdini

Well since $_SESSION{'user'] is already set why not use it since a session will last the entire time the user is on the site.

Oni

I don't think I understand what you mean?

I set the value of $user to $_SESSION['user'] because I use the variable $user later on in the code. Here's the layout:

-Login with username
-Forward to other site with username as variable $user = $SESSION['user']
-On other site, define $user as $SESSION['user'] and then I use the $user variable
-At first, this works but when I refresh the page $user variable seems to be non existant so that the database queries I run return blank values.

esukf

Oni wrote:
-Forward to other site with username as variable $user = $SESSION['user']
-On other site, define $user as $SESSION['user'] and then I use the $user variable

Are you trying to share sessions across different sites?? You can't do that.

Oni

Nah, its my site 😉

I meant site as another page--sorry

Houdini

Like I said use the $_SESSION['user'] after starting a session with session_start();

Oni

I'm missing something here but don't know what...

That is what I'm doing already? In the sample code on my first post?