$file = "/home/ns3090620/public_html/var/tmp/test.pdf";
    $txt = fopen($file, "w") or die("Unable to open file!");
    fwrite($txt, $pdfFileData['filestream']);
    fclose($txt);
    
    header('Content-Description: File Transfer');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    header("Content-Type: text/plain");
    readfile($file);