title: When running php's msg_get_queue(), is there any way to specify the group ownership of the queue?
body: <p>The 2nd argument to msg_get_queue is <code>int $permissions = 0666</code>, which could be set to <code>0660</code> to restrict use of the queue to the current group.</p>
  <p>Is there any way to specify which of a user's groups is the current group before calling this command, without using elevated privileges?</p>
  <p>In my case, I want the queue to be available to group <code>apache</code>, so it can be accessed by user <code>apache</code> and other members of that group.  However, this only works if user <code>apache</code> is the first one to call the method, and that can't be guaranteed.</p>