Knp\Component\Pager\Event\Subscriber\Sortable\ArraySubscriber::sortAsc PHP Method

    private function sortAsc($object1, $object2)
    {
        $fieldValue1 = strtolower($object1->{$this->currentSortingFieldGetter}());
        $fieldValue2 = strtolower($object2->{$this->currentSortingFieldGetter}());
        if ($fieldValue1 == $fieldValue2) {
            return 0;
        }
        return $fieldValue1 > $fieldValue2 ? +1 : -1;
    }