php计算指定时间段内的天数

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function _getCountDays($sTime, $eTime)
{
$startDt = getdate($sTime);
$endDt = getdate($eTime);
$sUTime = mktime(12, 0, 0, $startDt['mon'], $startDt['mday'], $startDt['year']);
$eUTime = mktime(12, 0, 0, $endDt['mon'], $endDt['mday'], $endDt['year']);
return round(abs($sUTime - $eUTime) / 86400);
}

$sTime = strtotime('2021-12-26');
$eTime = strtotime('2022-1-25');
echo _getCountDays($sTime,$eTime)+24;


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