Uma is a user management and authentication system written in PHP. It's completely object-oriented, supports MySQL and is flexible, powerful and easy to implement.
How many sites have you built lately that don't require some sort of user authentication? Most likely the site requires at least an admin interface of some sort, which requires some sort of user authentication mechanism. You could just stick a .htaccess file in the directory and deal with adding and removing users using htpasswd. This solution is cumbersome and not very secure. Writing your own authentication and user management system is also a possibility, but this requires time and effort to develop, test and implement. I recommendusing Uma. Uma is an open source authentication and user management system that I have written been using for several years and recently released under the LGPL.
