function set_approval_status($status_value) { $doc = new DOMDocument('1.0', 'UTF-8'); $doc->formatOutput = true; $medborder_sas = $doc->createElement('medborder_sas',TransMgmt_EntityManagementSystems::set_approved_value($this->order_id, $status_value)); $medborder_sas = $doc->appendChild($medborder_sas); $xml_string = $doc->saveXML(); return $xml_string; }