Previous posts recommended Mambo Server as a solution to user authentication. I looked at that software, but it's really an entire web development system.
Is there anything smaller that can be used as a module (like formmail, for example) that supports user authentication including registration, updating a profile, changing email addresses and passwords, etc. that doesn't involve an entire web development package?
My hosted server supports PHP and mySQL and I have access only to a cgi-bin folder at my site's root level. I'd like to add a section to the site, which is totally public, that is accessed through a login.
Any help would be appreciated.