I can use mod_rewrite to redirect
/dynamic.php and then server different content for xyz.php using
$_SERVER - where
xyz.php is any arbitrary filename requested by a client. No problem so far.
When a client connects to my WebDAV server they can list the contents of a directory, eg
/dynamic.php/ - how do I intercept this request so I can dynamically generate a list of available files for the client (which requests this list using