I am trying to estimate the price, and one thing - there is a "quick" login to facebook on the territory of the site participants. I think this is like an open id. Are there any tutorials anyone know about this?
I suppose there should be a lot of tutorials:
, Facebook, . PHP OAuth API: API OAuth
. OAuth Bitbucket, Box.net, Disqus, Dropbox, Eventful, Facebook, Fitbit, Flickr, Foursquare, github, Google, Instagram, LinkedIn, Microsoft, RightSignature, Salesforce, Scoop.it, StockTwits, SurveyMonkey, Tumblr, Twitter, XING Yahoo.
http://www.9lessons.info/2011/02/login-with-facebook-and-twitter.html
2. http://www.a2zwebhelp.com/login-with-facebook
3. http://runnable.com/UfwdES1fQz9uAAAh/simple-facebook-connect-php-example