[PHP] Ojects and sessions

[Greg Sidelinger]

I'm trying to store some classes that I created in session variables.  I
want to test for the object at the beginning of each page and if it does
not exist I want to create it.
 
I have the class definitions in a separate file that is included before
session_start()
But when I try to access the object I get an error.
Here is what I am trying right now.  This is from an example in the
Docs.
 
<?
            include_once('class.inc');            
            session_start();
 
            
            if(session_is_registered("a")) 
            { 
                        $a = &$HTTP_SESSION_VARS["a"];
            }
            else
            {
                        $a = new cart();
                        session_register("a");
                        $HTTP_SESSION_VARS["a"] = &$a;
            }
?>
 
Can some one please point me in the right direction on how to get
objects stored in my session vars.
 
Greg Sidelinger