CSocServTwitter::TwitterUserId

static function TwitterUserId($userId)
{
	$dbSocservUser = BitrixSocialservicesUserTable::getList([
		'filter' => ['=USER_ID' => intval($userId), "=EXTERNAL_AUTH_ID" => self::ID],
		'select' => ["ID"]
	]);
	$arOauth = $dbSocservUser->fetch();
	if($arOauth["ID"])
		return $arOauth["ID"];
	return false;
}