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maxim.prishchepa last edited by maxim.prishchepa
i need to know facebook user id, to begin using facebook chat, but almost everyone users don't know there user id's, but they know e-mails or phones. So... Question is: how can i get facebook user id, if i have e-mail or phone number ?
May be you should check Facebook's API's and more specifically OAuth2.0 login.