GcContent\Controller\TranslationController::downloadAction PHP Method

    public function downloadAction()
    {
        $translator = new Translator();
        $values = $translator->getValues();
        $zip = new ZipArchive();
        $tmpFilename = tempnam(sys_get_temp_dir(), 'zip');
        $res = $zip->open($tmpFilename, ZipArchive::CREATE);
        if ($res === true) {
            $locales = array();
            foreach ($values as $value) {
                if (!isset($locales[$value['locale']])) {
                    $locales[$value['locale']] = array();
                }
                $locales[$value['locale']][] = sprintf('"%s","%s"', str_replace('"', '"""', $value['source']), str_replace('"', '"""', $value['destination']));
            }
            foreach ($locales as $locale => $content) {
                $zip->addFromString($locale . '.csv', implode(PHP_EOL, $content));
            }
            $zip->close();
            $content = file_get_contents($tmpFilename);
            $filename = 'translations.zip';
            unlink($tmpFilename);
        }
        if (empty($content) or empty($filename)) {
            $this->flashMessenger()->addErrorMessage('Can not save translations');
            return $this->redirect()->toRoute('content/translation');
        }
        $headers = new Headers();
        $headers->addHeaderLine('Pragma', 'public')->addHeaderLine('Cache-control', 'must-revalidate, post-check=0, pre-check=0')->addHeaderLine('Cache-control', 'private')->addHeaderLine('Expires', -1)->addHeaderLine('Content-Type', 'application/octet-stream')->addHeaderLine('Content-Transfer-Encoding', 'binary')->addHeaderLine('Content-Length', strlen($content))->addHeaderLine('Content-Disposition', 'attachment; filename=' . $filename);
        $response = $this->getResponse();
        $response->setHeaders($headers);
        $response->setContent($content);
        return $response;
    }