<?php
class myClass {

    private $tids=array();
    public $active_topics=array();

    public function __construct() {/* removed irrelevant code */}

    public function getTopicsScore($topics=false,$params=array()) {

        // removed irrelevant code
        $results = $this->getScores($this->tids,$params);
        $start = microtime(true);

        foreach($results as $r) {
            //removed irrelevant code
            if(!isset($this->active_topics[$r['topic_id']])) {
                $this->active_topics[$r['topic_id']] = array_merge(array('tid' => $r['topic_id']),$this->default_values);
            }

            $this->getPointsBasic($r);
        }
        echo round(microtime(true)-$start,4).' returned '.count();

        return $this->active_topics;
    }

    private function getPointsBasic($r) {

        $this->active_topics[$r['topic_id']]['d_score']         += $r['score'];
        $this->active_topics[$r['topic_id']]['d_'.$r['type']] += $r['score'];

        switch($r['type']) {
            case 'likes':
                $r['score'] *= 2.3;
            break;

            //  more cases with different calculations etc....
        }

        $this->active_topics[$r['topic_id']][$r['type']]        += $r['score'];
        $this->active_topics[$r['topic_id']]['total_score']     += $r['score'];
    }
    // removed irrelevant code
}