[PHP] is this syntax correct?

[Jacky]

Hi all
is this syntax correct to work on session in php4?

<?php
global $test;
$test = "foo";
session_register("$test");
?>

but nest page when I call variable $test to echo it, nothing come up? what did I do 
wrong?
Jack
[EMAIL PROTECTED]
"There is nothing more rewarding than reaching the goal you set for yourself"