使用Phalcon框架实现文件下载的步骤

<?php
namespace AppControllers;

use PhalconMvcController;

class DownloadController extends Controller
{
    public function indexAction($filename)
    {
        $filepath = 'path_to_your_files_folder/'.$filename;
        
        if(file_exists($filepath)) {
            $response = new PhalconHttpResponse();
            $response->setHeader('Cache-Control', 'public');
            $response->setHeader('Content-Description', 'File Transfer');
            $response->setHeader('Content-Type', 'application/octet-stream');
            $response->setHeader('Content-Disposition', 'attachment; filename="'.basename($filepath).'"');
            $response->setHeader('Content-Transfer-Encoding', 'binary');
            $response->setHeader('Expires', '0');
            $response->setHeader('Pragma', 'public');
            $response->setHeader('Content-Length', filesize($filepath));
            ob_clean();
            flush();
            $response->setContent(file_get_contents($filepath));
            return $response;
        } else {
            // 如果文件不存在，返回相应的错误信息
            $this->flashSession->error("File not found.");
            return $this->response->redirect('');
        }
    }
}

<?php
use PhalconMvcRouter;

$router = new Router();

$router->add('/download/{filename}', [
    'controller' => 'Download',
    'action' => 'index'
]);

return $router;

<?php echo $this->url->get('/download/file.pdf'); // 替换为实际的文件名 ?>