public function getIssueVoucherItemsAction() { $voucher = $this->_request->getParam('voucher'); $wh_id = $this->_request->getParam('wh_id'); if (!empty($voucher)) { $pipeline_consignments = new Model_PipelineConsignments(); $result = $pipeline_consignments->getIssueVoucherItemsList($voucher, $wh_id); } else { $result = array("error" => "Please provide transaction number. e.g. (?voucher=12)"); } echo Zend_Json::encode($result); }