[PHP知识库]PHP将时间按分钟、小时、天等分

    //@params type 1 = minute;  2 = hour;  3 = day;
    public function average_time($type = 3){

        $formatStyle = [
            1 => 'Y-m-d H:i:s',
            2 => 'Y-m-d H:i',
            3 => 'Y-m-d',
        ];

        //test
        $startTime  = strtotime("2021-01-01 00:00:00");
        $endTime    = strtotime("+1 day",$startTime);

        $format = $formatStyle[$type];

        if ($type == 1) {
            //minute
            $seconds = 60;
        } elseif ($type == 2) {
            //hour
            $seconds = 3600;
        } else {
            //day
            $seconds = 86400;
        }

        $result = [];

        $for    = intval(($endTime - $startTime) / $seconds);
        for($i = 0; $i <= $for; $i++){
            $result[date($format,$startTime + $i * $seconds)] = 'somethings';
        }

        print_r($result);
    }

Array
(
    [2021-01-01 00:00] => somethings
    [2021-01-01 01:00] => somethings
    [2021-01-01 02:00] => somethings
    [2021-01-01 03:00] => somethings
    [2021-01-01 04:00] => somethings
    [2021-01-01 05:00] => somethings
    [2021-01-01 06:00] => somethings
    [2021-01-01 07:00] => somethings
    [2021-01-01 08:00] => somethings
    [2021-01-01 09:00] => somethings
    [2021-01-01 10:00] => somethings
    [2021-01-01 11:00] => somethings
    [2021-01-01 12:00] => somethings
    [2021-01-01 13:00] => somethings
    [2021-01-01 14:00] => somethings
    [2021-01-01 15:00] => somethings
    [2021-01-01 16:00] => somethings
    [2021-01-01 17:00] => somethings
    [2021-01-01 18:00] => somethings
    [2021-01-01 19:00] => somethings
    [2021-01-01 20:00] => somethings
    [2021-01-01 21:00] => somethings
    [2021-01-01 22:00] => somethings
    [2021-01-01 23:00] => somethings
    [2021-01-02 00:00] => somethings
)