php url shortening

[dadit]

Ok i guess this is a bit of a general question really as opposed to a problem.I am building a system where users can share their profile on other websites so i am wondering is it possible to shorten the actual url which would provide a link to their profile which would be something like this, \[code\]www.somedomain.com/users/profile.php?user=myusername\[/code\] to simply cut out the users folder and the profile page and so something like this: \[code\]www.somedomain.com/myusername\[/code\]I have seen lots of url shortening scripts but they don't seem to do this, any suggestions or advice would be appreciated. Thanks