Sessions across subdomains...anybody got any clue?

[Jadigidy]

Good afternoon phper's?

I have been getting whipped with this one. I have a simple script to set up a session using session_start() at one domain, and another script to receive the request in the same folder and it works. When I try to set up sessions from one domain and establish the session on a subdomain, I am getting programmers block. Anybody ever tried that before? Do you have to change paths to get it to work? Any help would be greatly appreciated!!
I can post code if necessary..

[Drakla]

YES! Use session set cookie vars and make your domain .domain.com the DOT before the domain name being all important, do that and you'll love it allways.

[Jadigidy]

Thanks for the response but I must say, I am a bonehead at work, let me get this straight on what you mean:

//The purpose of this script is to allow users to log in, if info is correct, you will go to new page, otherwise it will bounce you back to the login page.
//In my file on my main domain and a sub directory, I have this: 

//location: gospelmania.com/ts/index.php says:
<?php
session_set_cookie_params(0, '/root/', '.gospelmania.com');
//Where root is the main directory holding all of the domains.
session_start();
$_SESSION['first_name'] = 'FirstName';
$_SESSION['last_name'] = 'LastName';
$_SESSION['path'] = 'ts1.gospelmania.com/test/tli.org';
header("Location: " . "/path/to/subdomain/"); 
?>

//In my file on my subdomain and its sub directory, I have this: 

//location: ts1.gospelmania.com/test/tli.org/ -
index.php says:
<?php
session_start();
if(!isset($_SESSION['first_name'])) {
header("Location: " . "/path/back/to/first/page");
exit();
}
//More stuff
?>

Thanks again and I'll look forward to your reply!

[Drakla]

Looks fine - you could also set the session cookie params on the other site, too, but if you always initially started on the first site I don't think you'd need to.

[Jadigidy]

Whew, I am sorry to be replying to this message so late. I am trying to split yardwork and sitework! But in response to this message, I have tried cookie parameter and it still did not work (recognize the existing session). Now if I am setting up a simple session within the same folder, then it works because the session on the corresponding page sees the existing session. It doesn't seem to be using the cookie parameters directory because it doesn't create it's original directory in that folder. It still creates the sess_4op94n4p9 etc.. file in the same directory the index.php file is in. When I get to the redirected page and the session_start command is reached, it's creating a session right in that folder. That ain't right! Does anyone know my problem? It just seems like I'm not setting the directory for which I want sessions saved in correctly, HELP?!?!? Please???

Maybe I am loco, I must not fully understand how sessions work. When a session is started, it does create a file called sess_h8hpo98h etc but does it create another file somewhere else determined by your system settings on the server (C:\temp for example?) Thanks for any response...Lord knows I need it!

[Drakla]

Have you checked your php.ini file?

session.save_path = c:\temp

Edit the value to that and see if it resolves things

[Jadigidy]

Man, the help is appreciated and I must say in fixing the last problem, I was not completely understanding the session theory. I now have control over where is stores the sessions file, but what I don't understand is this.

When I save the session in the first file before I redirect, it creates the session like so. When I use the session_start() function in the new file to recognize the existing session, it doesn't and responses by starting a brand new session file in the same directory. Does that make sense?