PHP function to download file in Phalcon

    use PhalconHttpResponse;
    public function downloadAction($file)
    { 
        $response = new Response();
        $path = 'path/to-your-file/'.$file;
        $filetype = filetype($path);
        $filesize = filesize($path);   
        $response->setHeader("Cache-Control", 'must-revalidate, post-check=0, pre-check=0');
        $response->setHeader("Content-Description", 'File Download');
        $response->setHeader("Content-Type", $filetype);
        $response->setHeader("Content-Length", $filesize);
        $response->setFileToSend($path, str_replace(" ","-",$file), true);
        $response->send();
        die();
    }

Alternatively,

    public function downloadAction($file)
    { 
        $path = 'path/to-your-file/'.$file;
        $filetype = filetype($path);
        $filesize = filesize($path);
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header('Content-Description: File Download');
        header('Content-type: '.$filetype);
        header('Content-length: ' . $filesize);
        header('Content-Disposition: attachment; filename="'.$file.'"');
        readfile($path);
        die();*/
     }