PHP maximum balance method to solve the problem that the sum of the final percentages is not equal to 100

    /**
     * Notes:  Maximum balance method 
     * User:  Qu Shuai 
     * DateTime: 2022/2/25 0025  18:12
     * @param array $valueList  Two dimensional array  [['count' => 1],['count' => 2],['count' => 3]]
     * @param $contKey string  Fields to be counted 
     * @param $precision int  precision 
     * @param $percentKey int  Percentage key name 
     * @return array
     */
    public function getPercentValue(array $valueList, string $contKey, int $precision = 2, $percentKey = 'percent'): array
    {
        if (count($valueList) === 0) {
            return [];
        }
        $sum = array_sum(array_column($valueList, $contKey));
        if ($sum === 0) {
            foreach ($valueList as $k => $v) {
                $valueList[$k][$percentKey] = 0;
            }
            return $valueList;
        }
        $digits = pow(10, $precision);
        $currentSum = 0;
        $remainder = [];
        foreach ($valueList as $k => $v) {
            $votesPerQuota = $v[$contKey] / $sum * $digits * 100;
            $valueList[$k]['integer'] = (int)$votesPerQuota;
            //  balance 
            $remainder[$k] = $votesPerQuota - $valueList[$k]['integer'];
            //  Integer total （ Will be less than the real total ）
            $currentSum += $valueList[$k]['integer'];
        }
        $targetSeats = $digits * 100;
        while ($currentSum < $targetSeats) {
            $key = array_search(max($remainder), $remainder);
            $valueList[$key]['integer']++;
            unset($remainder[$key]);
            $currentSum++;
        }
        foreach ($valueList as $k => $v) {
            $valueList[$k][$percentKey] = $v['integer'] / $targetSeats;
            unset($valueList[$k]['integer']);
        }
        return $valueList;
    }
}