Facebook API example

facebook.php

<?php

// No controller
public function facebookLogin() {

        $facebook = new Facebook(array(
            'appId' => 'SEU ID',
            'secret' => 'SEU SECRET',
        ));
        $loginUrl = $facebook->getLoginUrl(array(
            'scope' => 'email,read_stream, publish_stream, user_birthday, user_location, user_work_history, user_hometown, user_photos, friends_birthday',
            'redirect_uri' =>  'http://seusite.com/facebook_connect',
        ));
        $this->redirect($loginUrl);
}

// obter os dados após logado
public function getDadosFacebook() {
        
        $facebook = new Facebook(array(
            'appId' => 'SEU ID',
            'secret' => 'SEU SECRET',
        ));

        $user = $facebook->getUser();


        if ($user) {
            try {

                $userData = $facebook->api('/me');
                debug($userData);

            } catch (FacebookApiException $e) {
                error_log($e);
            }
        }
}