Elgg\Profiler::analyzePeriod PHP Method

    private function analyzePeriod($name, array $times)
    {
        $begin = $this->findBeginTime($times);
        $end = $this->findEndTime($times);
        if ($begin === false || $end === false) {
            return false;
        }
        unset($times[':begin'], $times[':end']);
        $total = $this->diffMicrotime($begin, $end);
        $ret = ['name' => $name, 'percentage' => 100, 'duration' => $total];
        foreach ($times as $times_key => $period) {
            $period = $this->analyzePeriod($times_key, $period);
            if ($period === false) {
                continue;
            }
            $period['percentage'] = 100 * $period['duration'] / $this->total;
            if ($period['percentage'] < $this->minimum_percentage) {
                continue;
            }
            $ret['periods'][] = $period;
        }
        if (isset($ret['periods'])) {
            usort($ret['periods'], function ($a, $b) {
                if ($a['duration'] == $b['duration']) {
                    return 0;
                }
                return $a['duration'] > $b['duration'] ? -1 : 1;
            });
        }
        return $ret;
    }