PHP - Quicker way to do this?

Question

foreach(self::getGroups() as $group) $group_ids[] = $group->getId();

Is there a better, cleaner and more efficient way to do that?

Thanks! :-)

Answer 1

Well the only other way of doing that is with array_map() and it's not necessarily any quicker or better:

function get_id($group) {
  return $group->getId();
}

$group_ids = array_map('get_id', self::getGroups());