title: Download file in mobile device
body: <p>I have done with download in pc device with below code</p>
  
  <pre><code>    $file_url_source = "C:/test.xlsx";
      $file_url = "C:/test.xlsx";
      header('Content-Type: text/json; charset=UTF-8;');  
      header('Content-Description: File Transfer');
      header('Content-Type: application/octet-stream');
      header('Content-Disposition: attachment; filename="' . basename($file_url_source)."") . '"';
      header('Content-Transfer-Encoding: binary');
      header('Expires: 0');
      header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
      header('Pragma: public');
      header('Content-Length: ' . filesize($file_url));
      ob_clean();
      flush();
      readfile($file_url);
  </code></pre>
  
  <p>But it's not working for mobile device (I just tested it in Android mobile and it downloads the <code>download.php</code> file). How can I make mobile devices download the file?</p>