Many Linux distributions offer the XSL extension in a separate package that can be installed with a package manager. E.g. in Ubuntu the package might be php5-xsl, php7.0-xsl or php7.1-xsl depending on the PHP version.

More information about the XSL extension is available in the PHP Manual. EOT ); } $xml = new SimpleXMLElement(''); $sender = $xml->addChild('sender'); $this->arrayToXML($this->senderData, $sender); $recipient = $xml->addChild('recipient'); $this->arrayToXML($this->recipientData, $recipient); $invoice = $xml->addChild('invoice'); $invoiceData = $this->invoiceData; $invoiceData['totalsum'] = $this->totalSum; $invoiceData['totalvat'] = $this->totalVAT; $invoiceData['totalsumvat'] = $this->totalSumVAT; $invoiceData['paidsum'] = $invoiceData['invoice_unpaid'] ? $this->partialPayments : $this->totalSumVAT; $invoiceData['formatted_ref_number'] = $this->refNumber; $invoiceData['barcode'] = $this->barcode; $invoiceData['groupedvats'] = $this->groupedVATs; $this->arrayToXML($invoiceData, $invoice); $rows = $invoice->addChild('rows'); $this->arrayToXML($this->getInvoiceRowData(), $rows, 'row'); $type = $invoice->addChild('invoicetype'); $this->arrayToXML($this->invoiceTypeData, $type, 'invoicetype'); if ($this->attachments) { $attachments = $invoice->addChild('attachments'); foreach ($this->attachments as $attachment) { $attachment = getInvoiceAttachment($attachment['id']); $xmlAttachment = $attachments->addChild('attachment'); $xmlAttachment->addChild( 'name', $attachment['name'] ? $attachment['name'] : $attachment['filename'] ); $xmlAttachment->addChild('mimetype', $attachment['mimetype']); $xmlAttachment->addChild('filesize', $attachment['filesize']); $xmlAttachment->addChild('filename', $attachment['filename']); if ('application/pdf' !== $attachment['mimetype']) { // Image to PDF $pdf = new PDF('P', 'mm', 'A4', _CHARSET_ == 'UTF-8', _CHARSET_, false); $pdf->AddPage(); $pdf->Image( '@' . $attachment['filedata'], $this->left, $this->autoPageBreakMargin, $this->width, 0, '', '', 'B', false, 300, 'C' ); $pdf->SetXY($this->left, $pdf->GetY() + 5); $pdf->SetFont('Helvetica', '', 10); $pdf->multiCellMD( $this->width, 5, $attachment['name'] ? $attachment['name'] : $attachment['filename'], 'L' ); $xmlAttachment->addChild('filedata', base64_encode($pdf->Output('', 'S'))); } else { $xmlAttachment->addChild('filedata', base64_encode($attachment['filedata'])); } } } include 'settings_def.php'; $settingsData = []; foreach ($arrSettings as $key => $value) { if (substr($key, 0, 8) == 'invoice_' && $value['type'] != 'LABEL') { switch ($key) { case 'invoice_terms_of_payment' : $settingsData[$key] = $this->getTermsOfPayment( getPaymentDays($invoiceData['company_id']) ); break; case 'invoice_pdf_filename' : $settingsData[$key] = $this->getPrintOutFileName( getSetting('invoice_pdf_filename') ); break; default : $settingsData[$key] = getSetting($key); } } } $settingsData['invoice_penalty_interest_desc'] = $this->translate('PenaltyInterestDesc') . ': ' . miscRound2OptDecim(getSetting('invoice_penalty_interest'), 1) . ' %'; $settingsData['current_time_year'] = date('Y'); $settingsData['current_time_mon'] = date('m'); $settingsData['current_time_day'] = date('d'); $settingsData['current_time_hour'] = date('H'); $settingsData['current_time_min'] = date('i'); $settingsData['current_time_sec'] = date('s'); $settingsData['current_timestamp'] = date('c'); $settingsData['current_timestamp_utc'] = gmdate('Y-m-d\TH:i:s\Z'); $settings = $xml->addChild('settings'); $this->arrayToXML($settingsData, $settings); $xsltproc = new XSLTProcessor(); $xsl = new DOMDocument(); $xsl->load($xslt); $xsltproc->importStylesheet($xsl); $xsltproc->setParameter('', 'stylesheet', $this->printStyle); foreach ($this->xsltParams as $param => $value) { $xsltproc->setParameter('', $param, $value); } $domDoc = dom_import_simplexml($xml)->ownerDocument; $this->xml = $xsltproc->transformToXML($domDoc); if ($xsd) { libxml_use_internal_errors(true); $xmlDoc = new DOMDocument(); $xmlDoc->loadXML($this->xml); if (!$xmlDoc->schemaValidate($xsd)) { header('Content-Type: text/plain'); echo "Result XML validation failed:\n\n"; $errors = libxml_get_errors(); foreach ($errors as $error) { switch ($error->level) { case LIBXML_ERR_WARNING : $type = 'Warning'; break; case LIBXML_ERR_FATAL : $type = 'Fatal'; break; default : $type = 'Error'; } echo "$type {$error->code}({$error->level}) at {$error->line}:{$error->column}: {$error->message}\n"; } echo "\n\nXML:\n\n"; $lineno = 1; foreach (explode("\n", $this->xml) as $line) { echo "$lineno\t$line\n"; ++$lineno; } exit(1); } } } /** * Convert an array to XML * * @param array $array Array * @param SimpleXMLElement $xml XML * @param string $subnodename Sub node * * @return void */ protected function arrayToXML($array, &$xml, $subnodename = '') { foreach ($array as $key => $value) { if (is_array($value)) { $node = $xml->addChild( '' !== $subnodename ? $subnodename : $key ); if (!is_numeric($key)) { $this->arrayToXML($value, $node); } else { $this->arrayToXML($value, $node); } } else { if ($key != 'logo_filedata') { $xml->addChild($key, str_replace('&', '&', $value)); } else { $xml->addChild($key, base64_encode($value)); } } } } /** * Preprocess and return invoice rows * * @return array */ protected function getInvoiceRowData() { // Preprocess invoice rows if (getSetting('printout_markdown')) { $markdown = new MLMarkdown(); } else { $markdown = null; } $rows = []; foreach ($this->invoiceRowData as $data) { $data['type'] = $this->translate($data['type']); if ($markdown) { foreach (['product_name', 'product_code', 'description'] as $key) { if (!empty($data[$key])) { $markdownData = $markdown->transform($data[$key]); $data[$key] = trim( strip_tags( html_entity_decode( $markdownData, ENT_COMPAT | ENT_HTML401, 'UTF-8' ) ) ); } } } $rowDesc = ''; if (!empty($data['product_name']) && !empty($data['description'])) { $rowDesc = $data['product_name'] . ' (' . $data['description'] . ')'; } else { $rowDesc = (null !== $data['product_name'] ? $data['product_name'] : '') . $data['description']; } $data['row_description'] = $rowDesc; $rows[] = $data; } return $rows; } }