Is it a bad practice to use a GET parameter (in URL) with no value?

Question

I\'m in a little argument with my boss about URLs using GET parameters without value. E.g.

http://www.example.com/?logout

I see this kind of lin

Answer 1

It's perfectly fine, and won't cause any error. Though, nowadays most frameworks are MVC based, so in the URL you need to mention a controller and an action, so it looks more like /users/logout (BTW, also StackOverflow uses that URL to log users out ;).

The statement that it may cause errors to me sounds like your applications manually access the raw $_GET, and I definitely think that building apps without a framework (which usually provides an MVC stack and a router/dispatcher) is the real dangerous thing here.