OrderCompatibility::canPayWithUserBudget

static function canPayWithUserBudget($needSum, $userId, $currency, $fullPay = true)
{
	$budget = SaleInternalsUserBudgetPool::getUserBudget($userId, $currency);
	if ($fullPay === false && $budget > 0)
		return true;

	if ($fullPay === true && $budget >= $needSum)
		return true;

	return false;
}