I am poor in english please try to understand my question and answer me in simple english , i have 2 website on diffren databases installed .for example w websites url's is site1.com & site2.com , Site1.com is membership based site and site b is content based , I want when a user register on site1.com or site2.com than he can access his both acount own both websites , how can i do this ?

Hi

What you are referring to is a mechanism known as Single sign-on (SSO). Here are a couple of articles that will hopefully explain how to accomplish what you want to achieve:

Single sign-on: Concepts, methods and frameworks

HTH

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