public function getSummation($aFilter) { if (is_array($aFilter)) { $filter = new Billing_Model_OpenItemFilter(array(), 'AND'); $filter->setFromArrayInUsersTimezone($aFilter); } else { $filter = $aFilter; } $total = $this->getSums($filter); return array('total_netto' => $total['global_netto'], 'total_brutto' => $total['global_brutto'], 'open_sum' => $total['global_open'], 'payed_sum' => $total['global_payed'], 'totalcount' => $total['count']); }