SmashUser: Database based user management with group support

SmashUser is a class that allows you to manage users in an easy fashion.

It organizes the users in groups, which may be granted permissions different parts of your applications.

The class may perform authentication and create sessions for users that successfully log in.

The class also provides support for creating, updating and removing the records of users or groups.

The records of information of users and groups are stored in tables of a MySQL database. A script is provided to install the schema of such tables.