Arcanedev\LogViewer\Tables\StatsTable::prepareFooter PHP Method

    protected function prepareFooter(array $data)
    {
        $footer = [];
        foreach ($data as $date => $levels) {
            foreach ($levels as $level => $count) {
                if (!isset($footer[$level])) {
                    $footer[$level] = 0;
                }
                $footer[$level] += $count;
            }
        }
        return $footer;
    }