Problem with sessions after ISP moved my site to new server

[magenta placenta]

Hello,

I'm having some sessions problems after my ISP moved my site to a new server, supposedly setup the same. The problem appears to be browser-specific as well, which I don't quite understand.

First, my site uses sessions to login, this has been broken since they moved the site.

My ISP has set up a test page at http://launchcomplex.com/loggedin_test1.php. When I hit this page in IE 6 (where it sets some session vars) and then hit the "header redirect" button, sessions seem to work fine. If I try it in Firefox/Opera, I get a new session id on the redirected page. My ISP reports sessions are working for IE as well, though I imagine they're using IE7 or perhaps even 8.

Everything was working fine on my site before my ISP moved it and while they've been very helpful in responding, they're at a loss as to why it's broken. A couple of other of my sites with them were broken along with the move, but they have been resolved by server tweaks...Does anyone have any ideas what's going on?

[crmalibu]

before calling session_start(), call

ini_set('session.cookie_domain', '.launchcomplex.com'); 

Notice the leading .
This tells the browser the cookie should be shared with all subdomains. You will need to do this on all pages which call session_start(), or you can just set this in php.ini or .htaccess

[magenta placenta]

Would that explain why the sessions work for IE and not other browsers? That's what I can't figure out, it seems like it'd work for everyone or no one.

[Tapan]

Hi,

Try this:

@ini_set ("session.use_cookies", 1);
@ini_set ("session.use_trans_sid", 0);
session_start();
$PHPSESSID = session_id();

Put this on top of every php page. And then try the sessions.

Thanks.

[crmalibu]

Would that explain why the sessions work for IE and not other browsers? That's what I can't figure out, it seems like it'd work for everyone or no one.

Browsers have different policies on how they treat cookies. Their behavior can also be modified through configuration of browser settings, so you cannot always expect identical behavior.