How To Grant User Permission To Create Other Users?

There's something I can't quite figure out about user creating



The application that I'm currently working on is interacting with DB, therefore every time you use application you need to login as user which is fine. The problem is that certain users should be able to create new users and the new user may even have the same level of permissions as the one that's creating it ( like admin creating another admin acount or some like that).



Question is how can I allow users to create these user with giving them as few permissions as possible.



If there's is somewhere a code sample on the net I would appreciate the link.