PHP 獲取兩個日期相差多少年，多少月，多少天，多少小時，並填充陣列

<?php

/**
 * 獲取兩個日期相差多少年，多少月，多少天，多少小時，並填充陣列
 * @param  [type]  $startTime [開始日期，如:2018-02-10 10:00]
 * @param  [type]  $endTime   [結束日期，如:2018-03-01 15:00]
 * @param  integer $type      [單位型別：1小時，2天，3月，4年]
 * @return [type]             [description]
 */
function getTimesRange($startTime
 
, $endTime, $type = 1) 
{
    $timeRange = [];

    $diffRange = diffBetweenTwoDate($startTime, $endTime, $type);

    switch ($type) {
        case 1:
            $timeRange[] = date('Y-m-d H:00', strtotime($startTime));
            for ($i = 1; $i <= $diffRange['hours']; $i++) { 
                
 
$timeRange[] = date('Y-m-d H:00', strtotime( date('Y-m-d H:00', strtotime($startTime)) 
                    . "+ " . $i . " hours"));
            }
            break;

        case 2:
            $timeRange[] = date('Y-m-d', strtotime($startTime));

            for ($i = 1; $i <= $diffRange['day']; $i
 
++) { 
                $timeRange[] = date('Y-m-d', strtotime( date('Y-m-d', strtotime($startTime)) 
                    . "+ " . $i . " day"));
            }
            break;

        case 3:
            $timeRange[] = date('Y-m', strtotime($startTime));
            for ($i = 1; $i <= $diffRange['month']; $i++) { 
                $timeRange[] = date('Y-m', strtotime( date('Y-m', strtotime($startTime)) 
                    . "+ " . $i . " month"));
            }
            break;

        case 4:
            $timeRange[] = date('Y', strtotime($startTime));

            for ($i = 1; $i <= $diffRange['year']; $i++) { 
                $timeRange[] = date('Y', strtotime( date('Y', strtotime($startTime)) 
                    . "+ " . $i . " year"));
            }
            break;
    }

    return $timeRange;
}

/**
 * 獲取兩個日期相差多少年，多少月，多少天，多少小時
 * @param  [type]  $startTime [開始日期，如:2018-02-10 10:00]
 * @param  [type]  $endTime   [結束日期，如:2018-03-01 15:00]
 */
function diffBetweenTwoDate($dateOne, $dateTwo)
{
    $strtoDateOne = strtotime($dateOne);
      $strtoDateTwo = strtotime($dateTwo);
    
      if ($strtoDateOne < $strtoDateTwo) {
        $tmp = $strtoDateTwo;
        $strtoDateTwo = $strtoDateOne;
        $strtoDateOne = $tmp;
      }

    $dateMonthOne = explode('-', date('Y-m', $strtoDateOne));
    $dateMonthTwo = explode('-', date('Y-m', $strtoDateTwo));

    $diff = [];
    $diff['hours'] = ($strtoDateOne - $strtoDateTwo) / (60 * 60);
    $diff['day'] = ($strtoDateOne - $strtoDateTwo) / (60 * 60 * 24);
    $diff['month'] = abs($dateMonthOne[0] - $dateMonthTwo[0]) * 12 + abs($dateMonthOne[1] - $dateMonthTwo[1]);
    $diff['year'] = date('Y', $strtoDateOne) - date('Y', $strtoDateTwo);

    return $diff;
}

// 獲取兩個時間範圍，年月日時，並填充資料
$timesRange = getTimesRange('2018-2-10 10:00', '2019-03-01 15:00', 3);
var_dump($timesRange);

// 獲取兩個時間範圍，年月日時
$timesRangeCount = diffBetweenTwoDate('2018-2-10 10:00', '2019-03-01 15:00');
var_dump($timesRangeCount);