Session/global var problem

Hi,

I have the following code:

<?php
session_start();
if (!$PHPSESSID)
{
session_register('uid');
}
?>

Scenerio:
User enters http://.../test.php?uid=xyz
(ie the url containing the above code)
The session var contains: "def"

Problem:
I get the following output:

uid = xyz

I want the following output:

uid = def

How can I get the desired output - i.e., is there a way I can differentiate between a global variable (that has page scope) and a session variable?

Many thanks for any help in advance!
Dipen

echo "uid = " . $HTTP_SESSION_VARS["uid"];

should do the trick.

Thanks Shu,

I now have put your suggestion in my code.

However, why do I get nothing out on my screen when I do:

echo $HTTP_SESSION_VARS["xyz"];

versus
when I do:

global $xyz;
echo $xyz;

Many thanks for your help
Dipen

shu wrote:

echo "uid = " . $HTTP_SESSION_VARS["uid"];

should do the trick.