Permissions app on page tab Facebook

<?php
require 'sdk/facebook.php';

$fb = new Facebook(array(
  'appId'  => 'APP_ID',
  'secret' => 'SECRET_APP_ID',
));

$user = $fb->getUser();
if ($user) {
  try {
    $profile = $fb->api('/me');
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}
if($user) {
    $logoutUrl = $fb->getLogoutUrl();
} else {
    $app_id = $fb->getAppID(); // id da app

    //seto as permissões app
    $loginUrl = $fb->getLoginUrl(
        array(
          "scope" => "email, user_photos, read_friendlist",
          "redirect_uri" => "https://www.facebook.com/pages/YOU_PAGE/ID_PAGE?sk=app_".$app_id
          ));
      die ('<script type="text/javascript">top.location.href="' . $loginUrl . '";</script>');
}