I've other parameters in the query string just because I don't want them to be positional.

url is something like /blabla/bubu/bibi/?id=stuff

I'd like to use: $form['#action'] = url($_GET['q'], drupal_get_destination());

but the id query string part get encoded to

%3Fid%3D81152

Is there any other way to avoid positional parameters in query string? or is there a function to obtain the referring url?

thx