How to integrate their own systems with supporting forums to achieve synchronous registration, login, and cancellation

How to integrate the relevant forums of your system to achieve synchronous registration, login, and cancellation is similar to this problem: Login. For registration, you can use the method mentioned in the link to integrate the relevant forums of your system to achieve synchronous registration, login, and cancellation.
Requirement is similar to this problem: http://topic.csdn.net/u/20110126/14/26c464b0-be69-4c31-8cba-4fcf4c748a60.html
But more requirements are required. I want to synchronize all registered and logged-out accounts.
You can use the method mentioned in the link for registration (do you have to visit the forum registration link before handling registration ?), But how can I synchronize log on and log off? Does the Common Forum system provide the login and logout interface?

Several people in the school are working on a project and are currently working on the website. There are a lot of problems. thank you for your patience.

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Use a user table and use cookies to determine