Care with trailing slashes for POST to index.php'd urls

Because PHP is so tragically unhip (and it's nice to decouple your webapp's URLs from any particular technology) I use a few different strategies for routing across PHP projects. 

I've rolled my own router before with some .htaccess trickery, but the easiest way is to set up paths via folders, i.e. using "index.php" to allow the path to be, say "/action/login/" and not "/action/login.php".

One gotcha with that - if you POST to that kind of URL and fail to include the trailing slash, your server may redirect your POST to a GET of the URL with the slash - dropping the POSTed data