facebook php session problem..

[cfinger]

I'm working on a facebook app, and I can't for the life of me figure this one out. 

 

I need to create a session to pass some variables between pages.  It works just fine when I run the page on my site, however when I try to view it on the facebook site, the session never carries over.  POSTing stuff works just fine.

 

At first session_start(); was all i needed, but I read that facebook had problems with carrying over sessions, so I'm using the code from here: http://wiki.developers.facebook.com/index.php/PHP_Sessions

 

require_once 'appinclude.php';
ini_set("session.save_path", "/home/ckf/phpsessions/");
//***********************************
// Create Session Using Facebook Params
//***********************************

$API_KEY = 'my key is in here';

$prefix = ($_REQUEST['fb_sig_user']) ? 'fb_sig' : $API_KEY;

if( isset($_REQUEST[$prefix.'_session_key']) ){
    session_name( $_REQUEST[$prefix.'_session_key'] );
    session_start();

    $_SESSION['fb_user']        = $_REQUEST[$prefix.'_user'];
    $_SESSION['fb_session_key'] = $_REQUEST[$prefix.'_session_key'];
    $_SESSION['fb_expires']     = $_REQUEST[$prefix.'_expires'];
    $_SESSION['fb_in_canvas']   = $_REQUEST[$prefix.'_in_canvas'];
    $_SESSION['fb_time']        = $_REQUEST[$prefix.'_time'];
    $_SESSION['fb_profile_update_time'] = $_REQUEST[$prefix.'_profile_update_time'];
    $_SESSION['fb_api_key']     = $_REQUEST[$prefix.'_api_key'];
} else {
    // Just so there *is* a session for times when there is no fb session
    session_start();
}

 

 

and I have the same in the pages where I POST information to. 

 

Any Ideas? 

 

Colin

[cfinger]

strangely enough, everything works when I use an 'iframe'. 

 

There must be something that the 'fbml' doesn't like.