I thought I had this down, but I have a situation that isn't working. I have a page for dealing with schedules called adminSchedules.php and right at the top I put
<?php session_start(); ....
Then later on I make a xmlHTTPRequest and use the $_SESSION to get & set some session variables. I echoed them back to be sure they were set. Then I go back to the main adminSchedules page and I make another xmlHTTPRequest and when I try to access the session vars I set before, they are not set. I've checked over all the syntax carefully and the error I'm getting in the error_log fil