inserting parameters into URLs dynamically

We are looking for a way to set several key/value pairs (which will differ across users) such that they will persist during the user's session and be logged in the weblogs for every request that user makes. Some potential ways of doing this that occurred to us: - implement functionality to programmatically append these parameters to the querystring of all urls displayed across our site (far too cumbersome, we don't consider this a viable option) - find a way for PHP to automatically tack the parameters onto the ends of url querystrings, the same way it can do with PHPSESSIONID (we haven't found, in our initial research, a way to do this) Our primary goal is to get these parameters logged in the weblogs, without having to programmatically/physically modify every link on our site. For example, if we wanted to track parameters called x and y, the link on the page would just point to: /index.php but the weblog would show something like the following hit: /index.php?x=foo&y=bar The parameter values would need to get set once at the beginning of a user's session, and then would not change over the course of that session (but they'd need to get tracked with every request they made). We're planning to implement persistent sessions across our servers as well. ==================================== Maureen Roihl Senior Web Developer Smarter Living mo@smarterliving.com