I want to learn more Web sites, users login information sharing related issues

I want to learn more Web sites, users login information sharing issues.
I want to learn more Web sites, users login information sharing issues.

That is, I just in one of the site success, I visit another site without landing, you can synchronize user login information.

I know, this is probably what Ucenter did.

I have known this aspect to realize that the method of the site communication is many, but now ucenter do so well, so should be the best solution.

So I want to learn how to write Ucenter, although in the online can find Ucenter source code, but, it is too many source code, see very laborious.

Want to ask if there is a simple version of the Uncenter communication source (customer segment, and service segment two). I really want to learn and learn.

(Since I learned PHP, one of the biggest dreams is to write site communication)



------Solution--------------------
There are four main points of UCENTERAPI development
1. To understand the implementation mechanism of Sso,ucenter
2. Required documentation Http://www.comsenz.com/downloads/install/ucenter
3. To see an example
4. To do

Ucenter for the first time do not know where can under the latest official are not. Ucenter has been abolished since it was collected.
A handbook with examples has been circulated online

In fact
You can use another phpcms Phpsso, although weaker, but perfectly formed.

Have the ability to do a SSO yourself.

