Sessions and Variables in PHP
From Free Knowledge Base- The DUCK Project: information for everyone
learned something: The only way for any variable, (apache, environment, php) to remain set the next time the page is loaded is to create a session. Use start_session(); on the top of each page. It is not only necessary to START a session, but also necessary to RESUME a session. The reloading of a page is an example of when RESUME using start_session(); will be necessary to have access to those variable values.
reference: http://nl3.php.net/manual/en/function.session-start.php
