title: Look at $_SESSION changing
body: <p>I'm using joomla with a jumi page. Joomla and my php code share the session in all of the pages but one no...</p>
  
  <p>I need a Way in PHP to understand where the $_SESSION var will be changed.... </p>
  
  <p>Is there a way to add a 'hook' to this variable ?</p>