Question

I want that every user has a profile-url like this:

www.example.com/username

But my php page need the id of the user ( not username ).
for example I want that this url:

www.example.com/profile.php?id=13

become:

www.example.com/john

what I have to write in the htaccess ?

Answer 1

There is no magic answer to this question. You obviously need to have a PHP script that is able to take a username as a query parameter:

www.example.com/profile.php?username=john

Then you can use mod_rewrite:

RewriteEngine On
RewriteBase /
RewriteRule ^([^\.]+)$ profile.php?username=$1

The above rewrite rule will match any string not containing a dot, this may or may not fit your needs, depending on your overall url structure.