Symfony2 and the Facebook php sdk 4

March 16, 2015 at 09:21
Facebook Symfony

To work with the Facebook PHP SDK 4 in Symfony2, the first step is to add it to the composer. Edit the composer.json require and add this line:
"facebook/php-sdk-v4" : "4.0.*",
and then do an update ("php composer.phar update"). If it worked, the classes can be included via "use" in your controller:
use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
The classes can now be accessed without a path, like this:
FacebookSession::setDefaultApplication($id, $secret);
Symfony doesn't like how facebook is handling the session, so sooner or later there will be an exception:
FacebookSDKException: Session not active, could not store state.
This can easily be fixed, since a session_state check is not necessary:
$helper = new FacebookRedirectLoginHelper( $this->generateUrl( 'facebooklogin', array(), true ) );
Thanks a lot to the Stackoverflow Entry by SammyK, who presents all 3 options clearly

Tags: facebook api facebook sdk Symfony2

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