A question somewhat related to ComputerCraft

Hi. I am using PHP on my dev server, and I have noticed that people can use URLs like this:

https://minotar.net/avatar/z_hackz

Does anyone know how I can do something like this:

http://localhost/user/z_hackz

rather than

http://localhost/user.php?u=z_hackz

?

(Sorry, I am bad at explaining stuff.)

I'm guessing your web server is apache, so what you're after is mod_rewrite.

http://httpd.apache.org/docs/current/mod/mod_rewrite.html