The PHP SSO Client portion of the Barebones SSO Server/Client. Pairs with the SSO Server, which is an awesome, scalable, secure, flexible PHP login system that's become a bit ridiculous - but it still rocks anyway.
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Single Sign On (SSO) Client for PHP

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.

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