Permissions app on page tab Facebook

facebook_page.php

<?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>');
}