获取连续日期区间

/**
     * 获取连续日期区间
     * @param $dateArr
     * @return array
     */
    function getDateInterval($dateArr): array
    {
        $dateArr = array_unique($dateArr);
        sort($dateArr);
        $result = [];
        $interval = [];
        $cnt = count($dateArr);
        foreach ($dateArr as $key => $date) {
            if ($key == 0) {
                $interval['start'] = $date;
            }
            if ($key < ($cnt - 1) && strtotime($date) + 86400 == strtotime($dateArr[$key + 1])) {
                continue;
            } else {
                $interval['end'] = $date;
                $result[] = $interval;
                if ($key < ($cnt - 1)) {
                    $interval['start'] = $dateArr[$key + 1];
                }
            }
        }
        return $result;
    }

使用

getDateInterval(['2021-01-01', '2021-01-02', '2021-01-04', '2021-01-06', '2021-01-07'])

返回

array(3) {
  [0]=>
  array(2) {
    ["start"]=>
    string(10) "2021-01-01"
    ["end"]=>
    string(10) "2021-01-02"
  }
  [1]=>
  array(2) {
    ["start"]=>
    string(10) "2021-01-04"
    ["end"]=>
    string(10) "2021-01-04"
  }
  [2]=>
  array(2) {
    ["start"]=>
    string(10) "2021-01-06"
    ["end"]=>
    string(10) "2021-01-07"
  }
}

切割时间段

function splitDateRange($startDate, $endDate, int $step = 7): array
    {
        $result = [];
        $step = $step < 1 ? 1 : $step - 1;
        $startDate = date("Y-m-d", strtotime($startDate));
        $endDate = date("Y-m-d", strtotime($endDate));

        do {
            $tmpEndDate = date('Y-m-d', strtotime($startDate. " +{$step} day"));
            if (strtotime($tmpEndDate) >= strtotime($endDate)) {
                $tmpEndDate = $endDate;
                $result[] = [$startDate . " 00:00:00", $tmpEndDate . " 23:59:59"];
                break;
            } else {
                $result[] = [$startDate . " 00:00:00", $tmpEndDate . " 23:59:59"];
                $startDate = date('Y-m-d', strtotime($tmpEndDate. " +1 day"));
            }
        } while (true);

        return $result;
    }

使用

splitDateRange('2021-01-01', '2021-01-31')

返回

array(5) {
  [0]=>
  array(2) {
    [0]=>
    string(19) "2021-01-01 00:00:00"
    [1]=>
    string(19) "2021-01-07 23:59:59"
  }
  [1]=>
  array(2) {
    [0]=>
    string(19) "2021-01-08 00:00:00"
    [1]=>
    string(19) "2021-01-14 23:59:59"
  }
  [2]=>
  array(2) {
    [0]=>
    string(19) "2021-01-15 00:00:00"
    [1]=>
    string(19) "2021-01-21 23:59:59"
  }
  [3]=>
  array(2) {
    [0]=>
    string(19) "2021-01-22 00:00:00"
    [1]=>
    string(19) "2021-01-28 23:59:59"
  }
  [4]=>
  array(2) {
    [0]=>
    string(19) "2021-01-29 00:00:00"
    [1]=>
    string(19) "2021-01-31 23:59:59"
  }
}