Do Facebook Oauth 2.0 Access Tokens Expire?

Question

I am playing around with the Oauth 2.0 authorization in Facebook and was wondering if the access tokens Facebook passes out ever expire. If so, is there a way to request a l

Answer 1

I don't know when exactly the tokens expire, but they do, otherwise there wouldn't be an option to give offline permissions.

Anyway, sometimes requiring the user to give offline permissions is an overkill. Depending on your needs, maybe it's enough that the token remains valid as long as the website is opened in the user's browser. For this there may be a simpler solution - relogging the user in periodically using an iframe: facebook auto re-login from cookie php

Worked for me...