function getTDNumber($tdID, $backtaxTDID) { if ($tdID != "") { $td = new TD(); $td->selectRecord($tdID); $tdNumber = $td->getTaxDeclarationNumber(); } else { if ($backtaxTDID != "") { $backtaxTD = new BacktaxTD(); $backtaxTD->selectRecord("", $backtaxTDID); $tdNumber = $backtaxTD->getTDNumber(); } } return $tdNumber; }