title: How to limit download speed in this PHP code
body: <p>I have the following PHP code which concerns the download methods for my website. I am trying to rate-limit the download speed to something specific since it is currently being abused and milked by download managers.</p>
  
  <p>I am not experienced in coding, unfortunately.</p>
  
  <pre><code>public function download(
      $file,
      $filename,
      $file_size,
      $content_type,
      $disposition = 'inline',
      $android = false
  ) {
      // Gzip enabled may set the wrong file size.
      if (function_exists('apache_setenv')) {
          @apache_setenv('no-gzip', 1);
      }
      if (ini_get('zlib.output_compression')) {
          @ini_set('zlib.output_compression', 'Off');
      }
      @set_time_limit(0);
      session_write_close();
      header("Content-Length: ".$file_size);
  
      if ($android) {
          header("Content-Type: application/octet-stream");
          header("Content-Disposition: attachment; filename=\"".$filename."\"");
      } else {
          header("Content-Type: $content_type");
          header("Content-Disposition: $disposition; filename=\"".$filename."\"");
          header("Content-Transfer-Encoding: binary");
          header("Expires: -1");
      }
      if (ob_get_level()) {
          ob_end_clean();
      }
      readfile($file);
      return true;
  }
  </code></pre>