I'm trying to allow users to create their own custom URL for their profile page. I have a profile page called user.php that takes the parameter uid, so a URL might look like http://website.com/user.php?uid=10. How would I assign that user their own url, for example http://website.com/johndoe? And, additionally, how would I allow them to customize their URL if they feel the need to change it?
I planned on having a column in my MySQL table for url so that's where I plan to store this custom link.