Just encountered a website where HTTP query strings used in links have the form
http://www.example.com/index.php/?foo=A?bar=B
or
http://www.example.com/index.php/?foo=A?foo=B
The site is based on Joomla and I do not have access to the source code. My guess is that they are doing something fancy JavaScript there, but I couldn't verify this.
So, my question is: Is there any case where a query separating fields with ?
instead of &
is valid?