I sent out a link in an email that had a typo in the URL. I need to make a quick change for tracking purposes so that any incoming hits to the URL are instead parsed to another URL.
From the link sent out:
/app/prog1.php?id=1234
To the version I want to track:
/app/prog2.php?id=1234
How do I set up a RewriteRule to handle such a transformation?