Facebook PHP SDK: getting “long-lived” access token now that “offline_access” is deprecated

Question

BASIC PROBLEM: I want my app to be able to make calls to the Facebook graph api about authorized users even while the user is away.

For example, I want

Answer 1

In the last Facebook PHP SDK 3.2.0 you have a new function setExtendedAccessToken() that you have to call before getAccessToken();

Like this:

$user = $facebook->getUser(); 
$facebook->setExtendedAccessToken(); //long-live access_token 60 days
$access_token = $facebook->getAccessToken();