Facebook登录重定向URL设置状态传递参数重定向uri

Question

如何设置状态以重定向URL

我必须传递register.php？csrf = abc;

$redirect_uri=$protocol.$_SERVER["SERVER_NAME"]."/facebook/register.php";
$helper = new FacebookRedirectLoginHelper($redirect_uri);
$permissions = array(
  'email',    
  'public_profile'
  ); 
   $loginUrl = $helper->getLoginUrl($permissions);
    $loginUrl=$loginUrl."&auth_type=rerequest";
     header('Location: '.$loginUrl); exit;