差分日期计算

Question

我在用碳计算两个日期(，包括结束日期)之间的差异时遇到了问题。问题是：

我正在使用以下代码(https://laracasts.com/discuss/channels/general-discussion/carbon-display-age-in-years-months-day?page=1中的danharper的答案)：

$dateFrom = new Carbon("2017-01-01");
$dateTo   = new Carbon("2017-12-31");
$dateTo   = $dateTo->addDay();  //including End Date

echo $dateFrom->diff($dateTo)->format('%y') . " year, <br>";
echo $dateFrom->diff($dateTo)->format('%m') . " month, <br>";
echo $dateFrom->diff($dateTo)->format('%d') . " day <br>";
echo "difference " . $dateFrom->diffInDays($dateTo) . " days <br>";

场景1:

比方说，$date1 = 2017-01-01和$date2 = 2017-12-31，那么结果是：

1 year, 0 month, 0 day
difference 365 days

当我在https://www.timeanddate.com/date/durationresult.html?d1=1&m1=1&y1=2017&d2=31&m2=12&y2=2017&ti=on中使用日期计算器时，结果是：

It is 365 days from the start date to the end date, end date included
Or 1 year including the end date

他们得到了同样的答案。但

场景2:

$date1 = 2017-10-01和$date2 = 2017-12-31，然后结果是：

0 year, 3 month, 1 day
difference 92 days

使用https://www.timeanddate.com/date/durationresult.html?d1=1&m1=10&y1=2017&d2=31&m2=12&y2=2017&ti=on中的日期计算器，结果如下：

It is 92 days from the start date to the end date, end date included
Or 3 months including the end date

timeanddate.com的结果正好是3个月的仅为。不使用1天。

我想要的结果是3个月(timeanddate.com的答案)。

我怎样才能得到这个答案呢？

或者，如果无法实现，是否还有其他技术可实现：x months y days？

(ex：1 jan 2017 ~ 5 feb 2019 = 25 months, 5 days)

请帮帮我。

Answer 1

您可以像下面这样更改代码，

$dateFrom = new Carbon("2017-01-01");
$dateTo = new Carbon("2017-12-31");
$dateTo   = $dateTo->addDay();  //including End Date

$days = $dateFrom->diffInDays($dateTo);
$months = $dateFrom->diffInMonths($dateTo);
$years = $dateFrom->diffInYears($dateto);

在您的代码中，您已经测量了很多次差异，而不是一次。使用diffInDays()、diffInMonths()和diffInYears()函数获得两个日期之间的天数、月份和年份的值。

希望你能理解。

Answer 2

场景1

$start_date = new DateTime('1 Jan 2017');
$end_date   = new DateTime('5 Feb 2019 +1 day');

$difference = $start_date->diff($end_date);

$year_diff = $difference->format('%y');
$months_diff = $difference->format('%m');

$total_months = $months_diff + ($year_diff * 12);

$output = $total_months . ' months ' . $difference->format('%d') . ' days';

// would output 25 months 5 days

场景2

$start_date = new DateTime('2017-10-01');
$end_date   = new DateTime('2017-12-31 +1 day');

$difference = $start_date->diff($end_date);

$year_diff = $difference->format('%y');
$months_diff = $difference->format('%m');

$total_months = $months_diff + ($year_diff * 12);

$output = $total_months . ' months ' . $difference->format('%d') . ' days';

// would output 3 months 1 days