The official PHP SSO Client for the Barebones SSO Server.

Barebones SSO Server is an awesome, scalable, secure, flexible login system.

• Average memory footprint. About 1MB RAM per connection.
• Classes and functions are carefully named to avoid naming conflicts with third-party software.
• When authentication is required prior to executing some task (e.g. posting a comment), the SSO client encrypts and sends the current request data ($_GET, $_POST, etc.) to the SSO server for later retrieval and will resume exactly where it left off in most cases (e.g. the comment is posted).
• Encrypts communications over the network (even HTTP).
• Communicates with the server on a schedule set by the client. Allows for significantly reduced network overhead without affecting system integrity.
• And more. See the full feature list.
• Also has a liberal open source license. MIT or LGPL, your choice.
• Designed for relatively painless integration into your project.
• Sits on GitHub for all of that pull request and issue tracker goodness to easily submit changes and ideas respectively.

• Barebones SSO Server
• Quick start video tutorials