How to correctly generate a dynamic url for pages?

Question

htaccess

There are entries in the database with {user-id}
Now I can access /core/user.php?user_id=1234 and get the data of the user with id=1234.
Question: how can I make the pages look like: site.ru/user/1234/
What do I need to write in htaccess for this?

Answer 1

RewriteEngine on
RewriteRule ^user/([0-9]+)/?$ core/user.php?user_Id=$1 [L]