How do you configure Apache/PHP to accept slashes in query strings?

Question

I have two Apache servers running PHP. One accepts forward-slashes in the query string and passes it along to PHP in the expected way, for example:

http://server         


        

Answer 1

Note that if the query string is properly URL-escaped (i.e. with %2F instead of forward-slash), then everything works.

So it works when the query string is properly formatted and doesn't work when it isn't. What's the problem?