URGENT! - Sessions - Extraction of data

Anon

Hi, I want to store some information for a referrer tracking system I am building and have decided to use sessions (my first time) to store the info between pages...

however, I am having problems getting the results to appear on the next page.

for example:

I start as setup a session like so...

====================================

<?
// Step 1: Setting a name for the session.
session_name("sid");

// Step 2: Starting Session.
session_start();

// Step 3: Setting session variable - rid (rid = referrers ID)
session_register($rid);
?>

====================================

then the user leaves the site buy clicking on the item they wish to purchase, so I pass the sid (Session ID) to the CC authorizing site, that carries this number and returnes it to me after they hand the user back over to my site. I then want to recover the referrer ID from the session, but I get NOTHING.

Is this because I am not telling it the session number correctly, and is fo how should this be done, or am I not asking for the value in $rid (stored in the session) correctly?

Here is the code for the return page:

$sid = $merchant_order_id; << this line is passing the variable that the CC company used to carry the sid number to the $sid

====================================

<?
$sid = $merchant_order_id;

echo "SID=$sid<BR>
          MOID=$merchant_order_id<BR>
          RID=$rid";

====================================

The echo statement was just so i can see what values were being held by the them.

SID and MOID both have the same number if everything worked correctly, RID, should get the value from the session variable $rid.

But I get nothing, what is wrong?

sorry for the long post, but i am just totally lost and I NEED to get this done soon!

van__

According to the manual and everything I've seen, session_register reads out of the GLOBAL scope.

So try being explicit...
<?
$GLOBAL['rid'] = $rid;
session_register('rid');

//and now try to echo...
echo $_SESSION['rid']; //for PHP-4.1.2<
echo $HTTP_SESSION_VARS['rid']; // >PHP-4.1.2
?>

van__

Geeeeezussssss
Excuse my typo...

$GLOBAL['rid'] = $rid;
SHOULD BE
$GLOBALS['rid'] = $rid;

<?
$GLOBALS['rid'] = $rid;
session_register('rid');

//and now try to echo...
echo $_SESSION['rid']; //for PHP-4.1.2<
echo $HTTP_SESSION_VARS['rid']; // >PHP-4.1.2
?>

Anon

Thnx Van, i just solved my problem, it was nothing to do with how they were setup or anything, it was that when the user was sent back to my site, my site found no session ID (SID) because it was now named merchant_order_id (MOI).

This left me to possible solutions:

The easiest, but less clean/desired was to change the session_name() to this var (MOI),

I could place an extra page (being a redirection (refresh) page set to '0' seconds) between the CC page and the Order Success Page. This gave me a great deal more control and is the option I went with. I was able to to set the value of $sid to $merchant_order_id, and pass this in the URL so the session knew what value $rid held on the next page.

But again, thank you for your input, the variables were set correctly, just I messed up with setting $sid to eq $moi.

Regards,
Charlie