if (isset($_GET['code'])) {
$code = $_GET['code'];
$token_url = "https://graph.facebook.com/oauth/access_token?" . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url) . "&client_secret=" . $app_secret . "&code=" . $code;
$response = @file_get_contents($token_url);
$params = null;
parse_str($response, $params);
$acces_token = $params['access_token'];
// If you already have a valid access token:
$session = new \Facebook\FacebookSession($acces_token);
// To validate the session:
try {
$user_profile = (new \Facebook\FacebookRequest($session, 'GET', '/me'))->execute()->getGraphObject(\Facebook\GraphUser::className());
$email = $user_profile->getEmail();
if ($email) {
$UserFacebookQuery = new UserFacebookQuery($crud);
$UserFacebookQuery->filterByEmail($email);
$UserFacebookQuery->find();
$UserFacebookEntity = $UserFacebookQuery->_getEntity();
// L'utilisateur existe
if ($UserFacebookEntity) {
$UserFacebookEntity->setAccessToken($acces_token);
$UserFacebookEntity->setDateModification(time());
$UserFacebookEntity->save();
$_SESSION['oauth2']['facebook'] = $acces_token;
// L'utilisateur n'existe pas
} else {
$UserFacebookEntity = new UserFacebookEntity(null, $crud);
$UserFacebookEntity->setAccessToken($acces_token);
$UserFacebookEntity->setIdUser($User['id']);
$UserFacebookEntity->setIdFacebook($user_profile->getId());
$UserFacebookEntity->setName($user_profile->getName());
