GcDevelopment\Controller\LayoutController::downloadAction PHP Method

    public function downloadAction()
    {
        $layoutId = $this->getRouteMatch()->getParam('id', null);
        if (!empty($layoutId)) {
            $layout = Layout\Model::fromId($layoutId);
            if (empty($layout)) {
                $this->flashMessenger()->addErrorMessage('This layout can not be download');
                return $this->redirect()->toRoute('development/layout/edit', array('id' => $layoutId));
            }
            $content = $layout->getContent();
            $filename = $layout->getIdentifier() . '.phtml';
        } else {
            $layouts = new Layout\Collection();
            $children = $layouts->getLayouts();
            $zip = new ZipArchive();
            $tmpFilename = tempnam(sys_get_temp_dir(), 'zip');
            $res = $zip->open($tmpFilename, ZipArchive::CREATE);
            if ($res === true) {
                foreach ($children as $child) {
                    $zip->addFromString($child->getIdentifier() . '.phtml', $child->getContent());
                }
                $zip->close();
                $content = file_get_contents($tmpFilename);
                $filename = 'layout.zip';
                unlink($tmpFilename);
            }
        }
        if (empty($content) or empty($filename)) {
            $this->flashMessenger()->addErrorMessage('Can not save layouts');
            return $this->redirect()->toRoute('development/layout');
        }
        $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;
    }