Facebook登录：我的应用程序应该使用哪个参数来识别用户？ id或电子邮件？

Question

So right now I'm identifying the user via their email [given that they allow it during the Facebook log in process]. But I feel people are able to change their main email address associated with their account, and if they do, it might mess up my app.

So is it better to use their Facebook id instead of email? I believe id is permanent and unique to an individual's Facebook account, correct?

$user['email'] or $user['id']?

Answer 1

Yes, the correct way to identify users (And use as Primary Key in your databases) is with the Facebook Id.

Email people can change and there is people that don't have an email on Facebook.

Another advantage of using the ID, is that you don't need the users to give you access to their email (it's a different permission). Some people might not want to do that!