WKHtmlToPDF::setPatients PHP Method

    public function setPatients($patients)
    {
        $this->patients = $patients;
    }

 /**
  * Prints next pending letter type for requested operations
  * Operation IDs are passed as an array (operations[]) via GET or POST
  * Invalid operation IDs are ignored.
  *
  * @throws CHttpException
  */
 public function actionPrintLetters()
 {
     Audit::add('waiting list', @$_REQUEST['all'] == 'true' ? 'print all' : 'print selected', serialize($_POST));
     if (isset($_REQUEST['event_id'])) {
         $operations = Element_OphTrOperationbooking_Operation::model()->findAll('event_id=?', array($_REQUEST['event_id']));
         $auto_confirm = true;
     } else {
         $operation_ids = isset($_REQUEST['operations']) ? $_REQUEST['operations'] : null;
         $auto_confirm = isset($_REQUEST['confirm']) && $_REQUEST['confirm'] == 1;
         if (!is_array($operation_ids)) {
             throw new CHttpException('400', 'Invalid operation list');
         }
         $operations = Element_OphTrOperationbooking_Operation::model()->findAllByPk($operation_ids);
     }
     $this->layout = '//layouts/print';
     $cmd = Yii::app()->db->createCommand('SELECT GET_LOCK(?, 1)');
     while (!$cmd->queryScalar(array('waitingListPrint'))) {
     }
     $directory = Yii::app()->assetManager->basePath . '/waitingList';
     Yii::app()->db->createCommand('SELECT RELEASE_LOCK(?)')->execute(array('waitingListPrint'));
     $html = '';
     $docrefs = array();
     $barcodes = array();
     $patients = array();
     $documents = 0;
     // FIXME: provide a means by which progress can be reported back to the user, possibly via session and parallel polling?
     foreach ($operations as $operation) {
         $letter_status = $operation->getDueLetter();
         if ($letter_status === null && $operation->getLastLetter() == Element_OphTrOperationbooking_Operation::LETTER_GP) {
             $letter_status = Element_OphTrOperationbooking_Operation::LETTER_GP;
         }
         set_time_limit(3);
         $html .= $this->printLetter($operation, $auto_confirm);
         $docrefs[] = "E:{$operation->event->id}/" . strtoupper(base_convert(time() . sprintf('%04d', Yii::app()->user->getId()), 10, 32)) . '/{{PAGE}}';
         $barcodes[] = $operation->event->barcodeHTML;
         $patients[] = $operation->event->episode->patient;
         ++$documents;
         if ($letter_status == Element_OphTrOperationbooking_Operation::LETTER_GP) {
             // Patient letter is another document
             $docrefs[] = "E:{$operation->event->id}/" . strtoupper(base_convert(time() . sprintf('%04d', Yii::app()->user->getId()), 10, 32)) . '/{{PAGE}}';
             $barcodes[] = $operation->event->barcodeHTML;
             $patients[] = $operation->event->episode->patient;
             ++$documents;
         }
     }
     set_time_limit(10);
     $pdf_suffix = 'waitingList_' . Yii::app()->user->id . '_' . rand();
     $wk = new WKHtmlToPDF();
     $wk->setDocuments($documents);
     $wk->setDocrefs($docrefs);
     $wk->setBarcodes($barcodes);
     $wk->setPatients($patients);
     $wk->generatePDF($directory, $pdf_suffix, '', $html);
     $pdf = $directory . "/{$pdf_suffix}.pdf";
     header('Content-Type: application/pdf');
     header('Content-Length: ' . filesize($pdf));
     readfile($pdf);
     @unlink($pdf);
 }