Content-Disposition with encoding fix for Firefox

webResponse.class.php

<?php

  public function contentDispose($type, $name=null)
  {
    $header=$type;

    if ($name)
    {
      // Firefox bug https://bugzilla.mozilla.org/show_bug.cgi?id=588409
      $isFF=(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'firefox') !== false);
      $name=$isFF ? sprintf('=?utf-8?B?%s?=', base64_encode($name)) : strtr(urlencode($name), array('+'=> '%20'));
      $header.=sprintf('; filename="%s"', $name);
    }

    $this->addHttpMeta('Content-Disposition', $header);
  }