Basic authentication and session management library for PHP?

Question

I know questions like this have been asked numerous times, but not quite this one. Forgive me if I overlooked an obvious duplicate.

In the core of many of my web app

Answer 1

My understanding is that there is no standard library because there is no standard definition of what a user is.

In some of my applications, users simply log in to do stuff. In others, users are part of a company and their permissions and data access are limited by the limits of that company and the subscription level paid for by the company. In other applications, some users are admins with access to everything, some users are admins with access to some data (row level), and other users are the clients of those admins, with access only to their own data. Some users are tied to firms/companies/customers, other users are not. Some users are just a username and password, others are a large object graph with clients, order histories, report preferences, comments, etc.

Maybe I'm wrong and there's some clean way of abstracting all of those requirements into a system that doesn't require five layers of subclassing and a thousand DB hits to log someone in. I haven't found it though.