Took me long enough to find this. One thing that I found somewhat frustrating about PHP was the inability to do a server-side redirect. Well, apparently, you can. Here is the code:
<?php header("location:http://www.carolingianrealm.info/"); ?>
I found this tip on CodingForums.com.
Relative URLs are permitted, as are query string parameters.
The advantage of this technique over an include/return statement is that the new URL is reflected in the browser's location bar.
I've updated my Wander link accordingly.