.htaccess image to php redirect rewrite

Question

I have a site that gives you a random cat gif every time you refresh, and it works in image tags. Some forums won't let you put http://randomcat.tk in an image tag, so I was thinking I could use RewriteEngine so people can put http://randomcat.tk/cats.gif and have it redirect to index.php.

Sorry if that made no sense.

Answer 1

Try this:

RewriteRule ^.+$ /index.php [L]

this will redirect any request to index.php

Answer 2

Should work:

RewriteRule ^cats.gif$ index.php [L]