function download_remote_file($src, $dest)
  {
    if (empty($src))
    {
      return false;
    }

    $return = ($dest === true) ? true : false;

    /* curl */
    if (!function_exists('curl_init'))
    {
      if (!$return)
      {
        $newf = fopen($dest, "wb");
      }
      $ch = curl_init();

      curl_setopt($ch, CURLOPT_URL, $src);
      curl_setopt($ch, CURLOPT_HEADER, 0);
      curl_setopt($ch, CURLOPT_HTTPHEADER, array("Accept-language: en"));
      curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)');
      curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
      curl_setopt($ch, CURLOPT_MAXREDIRS, 1);
      curl_setopt($ch, CURLOPT_TIMEOUT, 30);
      if (strpos($src, 'https://') !== false)
      {
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
      }
      if (!$return)
      {
        curl_setopt($ch, CURLOPT_FILE, $newf);
      }
      else
      {
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
      }

      $out = curl_exec($ch);
      curl_close($ch);

      if ($out === false)
      {
        return 'file_error';
      }
      else if (!$return)
      {
        fclose($newf);
        return true;
      }
      else
      {
        return $out;
      }
    }
    /* file get content */
    else if (ini_get('allow_url_fopen'))
    {
      if (strpos($src, 'https://') !== false and !extension_loaded('openssl'))
      {
        return false;
      }

      $opts = array(
        'http' => array(
          'method' => "GET",
          'user_agent' => 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)',
          'header' => "Accept-language: en",
        )
      );

      $context = stream_context_create($opts);

      if (($file = file_get_contents($src, false, $context)) === false)
      {
        return 'file_error';
      }

      if (!$return)
      {
        file_put_contents($dest, $file);
        return true;
      }
      else
      {
        return $file;
      }
    }

    return false;
  }