PHP Notice for domain navigator

Undefined index: is an E_ALL strict error message.

Drupal 5 does not require E_ALL strict error compliance, and DA does not check for it.

See http://drupal.org/node/34341

I can verify that this is happening on my installation as well. I've looked into it and did some testing and it turns out the 'path' element is not passed in the parse_url array when there is no path to return. (Actually, I found this to be true no matter where I attempted to navigate.) When I did a dump of the variable on a blank screen in PHP 5.1.2, this is what it returned:

Array ( [scheme] => http [host] => example.com )

This appears to be due to the version of PHP. Older versions will pass the 'path' element regardless, whereas since version 4.4.7 it won't return anything. Please see this comment in the parse_url page of php.net: http://us3.php.net/manual/en/function.parse-url.php#77591

Most likely fix would be to check with isset() to see if path is being returned. That's also listed as a best practice in the page you linked to above.

EDIT: Of course, I fixed it somehow on my end, but I wanted to bring this to your attention regardless. Awesome work on this module!

Yes, but checking with isset() -- E_ALL strict compliance -- is not required in D5.

If you have a patch, I'll commit it, but I'm not spending time on this.

The issue is actually not in Domain Nav. It's in the main module. Domain Nav just causes it to appear frequently.

function domain_get_path($domain) {
  global $base_url;
  $_url = parse_url($base_url);
  // We need a trailing slash at the end of the path
  if (!isset($_url['path']) || substr($_url['path'], -1) != '/') {
    $_url['path'] .= '/';
  }
  $path = $domain['scheme'] .'://'. $domain['subdomain'] . $_url['path'];
  return $path;
}

Is this the fix?

Fixed and committed.