NatLibFi / Skosmos

                        }

                    }

                    // if the main concept scheme was not found, set 'top' to the first 'tops' (sorted alphabetically on the URIs)

                    if (! isset($results[$uri]['top'])) {

                        $results[$uri]['top'] = $results[$uri]['tops'][0];

                    }

                } else {

                    // no main concept scheme set on the vocab, take the first value of 'tops' (sorted alphabetically)

                    $results[$uri]['top'] = $results[$uri]['tops'][0];

            foreach ($topconcepts as $top) {

                if (!isset($results[$top['uri']])) {

                    $results[$top['uri']] = array('uri' => $top['uri'], 'top'=>$top['topConceptOf'], 'tops'=>array($top['topConceptOf']), 'prefLabel' => $top['label'], 'hasChildren' => $top['hasChildren']);

                    if (isset($top['notation'])) {

                        $results[$top['uri']]['notation'] = $top['notation'];

                    }

                }

            }