plesk / api-php-lib

    {

        if ($request instanceof SimpleXMLElement) {

            $request = $request->asXml();

        } else {

            $xml = $this->getPacket();

            if (is_array($request)) {

                $request = $this->_arrayToXml($request, $xml)->asXML();

            } else if (preg_match('/^[a-z]/', $request)) {

                $request = $this->_expandRequestShortSyntax($request, $xml);

            }

        }

        if ('sdk' == $this->_protocol) {

            $version = ('' == $this->_version) ? null : $this->_version;

        foreach ($requests as $request) {

            if ($request instanceof SimpleXMLElement) {

                throw new Client\Exception('SimpleXML type of request is not supported for multi requests.');

            } else {

                if (is_array($request)) {

                    $request = $this->_arrayToXml($request, $requestXml)->asXML();

                } else if (preg_match('/^[a-z]/', $request)) {

                    $this->_expandRequestShortSyntax($request, $requestXml);

                }

            }

            $responses[] = $this->request($request);

        }