Database Administration

Hi I need to build a custom client management app, which will build and manage a database per client. This means that on top of the usual sql crud, it needs to be able to create databases, add/edit/delete database users, create tables. Is there a way for me to do this nicely as PHP solution? am I better off incorporating non PHP pieces into this (e.g. shell)? or should I leave the admin tasks (e.g. database creation) as a 'normal' administrative task (commandline/webmin/watever)?