Why isn't my named PHP session able to be called? - php

Question

I've already posted something similar to this, but I redesigned the entire system. Instead of the original system I've created a separate sub domain for accounts. I'm having issues getting any variables from my named session. I'm attempting to transfer user information accross sub domains for login purposes, and tracking purposes. Anyways, here is the code.
Login Script
<?php
session_name('LoginSession');
session_set_cookie_params(0, '/', '.ueteribus.com');
session_start();
?>
That code is just the bit that tells the $_SESSION to be spread across all the domains. (Or at least it is supposed to) Anyways, the LoginSession name is where the problem comes in. If that is added in then I am unable to get anything to display using my calling scripts.
Currently I use
$_SESSION['USERNAME_ueteribus']
$_SESSION['PASSWORD_ueteribus']
$_SESSION['loginsession21']
Those are the main $SESSIONS that I use, and currently I am unable to get them displayed when giving the Cookies any specific name.
This is the current script I am using to call the actual $_SESSION by name.
<?php
session_name('LoginSession');
session_start();
echo $_SESSION['loginsession21'];
?>
That worked fine before I added the custom name for the $_SESSION.
Any help would be much appreciated as this issue has been plaguing me for a very long time, also.. When I actually head into the Cookies on my browser, I see LoginSession, but it is listed under the main domain. www.XXXX.com instead of account.xxxx.com.
No idea if that is normal or not, anyways.. Any additional information can be requested, and thank you for any assistance that you can provide.
NOTE: All the scripts and code listed above are saved on the account sub domain!
UPDATE:
I just tried this code and it still doesn't work.
<?php
session_name('LoginSession');
session_set_cookie_params(0, '/', '.ueteribus.com');
session_start();
echo $_SESSION['loginsession21'];
?>
Also I added this script to the top of each page.
<?php
session_set_cookie_params(0, '/', 'ueteribus.com');
session_start();
?>

Answer 1

My guess is that you're missing the session cookie config in your other (not Login Script) files. Just like session_name(), you need to call it on every request and before session_start() (despite what other commenters may believe).
<?php
session_name('LoginSession');
session_set_cookie_params(0, '/', '.ueteribus.com');
session_start();
// of course this line will only work if you've previously set the "loginsession21" key
echo $_SESSION['loginsession21'];
?>
Update
After making changes to either session name or cookie params, you'll need to clear out the old cookie from your browser.
You also need to make sure that the session is not started anywhere else in your code.
I would suggest moving all the session config stuff into a single file and include it at the top of every requestable page. Also remove any and all other calls to session_start().
<?php
// session_config.php
session_name('LoginSession');
session_set_cookie_params(0, '/', '.ueteribus.com');
session_start();
then, in some other script
<?php
// some_other_script.php
require_once __DIR__ . '/relative/path/to/session_config.php';