PHP对数据进行分组

 $datas = $this->dataGroup($matchsInfo, 'match_id');
    /**
     * @param array $dataArr 需要分组的数据
     * @param string $keyStr 分组依据
     * @return array
     */
    protected function dataGroup(array $dataArr, string $keyStr)
    {
        $newArr = [];
        foreach ($dataArr as $k => $val) {
            $newArr[$val[$keyStr]][] = $val;
        }
        return $newArr;
    }