DevShed continues their look at security in PHP applications in this third part of the series, a focus on filtering and login systems for your applications.

Any web site that is selective in the kind of users that it wants to grant access to will need some method of filtering. This filtering is usually done through a login system. This (and more) is what we will be building.

The site is made up of a few key components - login/logout pages, password management, a registration page and various configuration and settings files. They include everything you'll need, including the HTML and CSS to make things look exactly the same. The backend is driven off of a MySQL database to store the users and their account info.