How can I create a universal login system like stackoverflow?
http://stackoverflow.com/users/login in php?
I don't want to use Gigya, because I don't want their branding on my site
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187answers:
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A:
There are several Open Source OpenID client libraries for PHP. Check out the Libraries page on Openid.net.
Pekka
2010-08-08 17:01:37
Unfortunately, Facebook is not an OpenID provider, so the StackOverflow engine uses the proprietary Facebook API for that. Microsoft Live ID's are not really usable at all (you can only do very basic authentication), but MS said they will eventually be a provider (they ran a beta and discovered that they had messed up, so they were starting over).
MvanGeest
2010-08-08 17:13:52
what is the difference between oAuth, OpenID, OpenSocial...their documentation are really frustrating
Exoot
2010-08-08 17:17:54
and how to get users information using OpenID, this is so confusing!
Exoot
2010-08-08 17:19:49
You can't, really. But see http://yz.mit.edu/wp/making-sense-of-openid-oauth-opensocial-google-friend-connect-facebook-connect-and-more/ for a very clear article on what's going on.
MvanGeest
2010-08-08 21:29:31