While I'm at it, if my first try didn't do the trick, this snippet may help you figure out what you want to do. It is really two different approaches.

PHP: Select all

foreach ($_SESSION as $k => $v) {
     echo '<br />$_SESSION[' . $k .'] ';
     echo "is set to $v. <br />";
     global $$k;
     echo "$$k has a value of $v. <br />";
 } 

I use something like this sometimes with an intro "The following session variables are set".