The TutsPlus.com site has posted the next part of their "Build Your Startup with PHP" series today. This time they show you how to make it even easier for the users of your site to sign up using OAuth and third-party authentication.
In this tutorial, I'll guide you through implementing OAuth integration with common social networks to make signing up and repeated usage easier and more efficient. I'll explore Facebook, Google, Twitter and LinkedIn, the networks I see as being most appropriate to Meeting Planner's target users.
The tutorial makes use of the Yii framework's own AuthClient functionality to make the actual requests to the 3rd party services. They help you get it installed via Composer and the configuration changes you'll need to make for it to be available and functional.
The tutorial then shows how to create developer applications on a few different services: Twitter, Facebook, Google and LinkedIn. They help you update your configuration with the secret keys for each and create a new database update for storing the 3rd party identifiers when the connection is made. Finally they hook it into the user profile and the login page for use by your users.