php日期差异计算添加额外的天数

发布于 2025-01-10 17:41:39 字数 492 浏览 0 评论 0原文

尝试在 PHP 中显示两个日期之间的差异。

<?php
    $date1 = new DateTime("2022-03-01");
    $date2 = new DateTime("2022-04-01");
    $interval = $date1->diff($date2);
    echo $interval->days;
    echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; 
?>

我得到的结果是：-

31差异0年1个月3天

$interval->days 结果是正确的，但为什么将 $interval->d 设置为 3，而它仅仅相差一个月？

原文

Trying to display difference between two dates in PHP.

<?php
    $date1 = new DateTime("2022-03-01");
    $date2 = new DateTime("2022-04-01");
    $interval = $date1->diff($date2);
    echo $interval->days;
    echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; 
?>

I am getting result as:-

31difference 0 years, 1 months, 3 days

$interval->days result is correct, but why having $interval->d as 3 when its just a month difference?

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高速公鹿 2025-01-17 17:41:39

尝试下面

<?php
    $date1 =DateTime::createFromFormat("Y-m-d", "2022-03-01");
    $date2 =DateTime::createFromFormat("Y-m-d", "2022-04-01");
    $interval = $date1->diff($date2);
    echo $interval->days;
    echo " \ndifference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; 
?>

Try below

<?php
    $date1 =DateTime::createFromFormat("Y-m-d", "2022-03-01");
    $date2 =DateTime::createFromFormat("Y-m-d", "2022-04-01");
    $interval = $date1->diff($date2);
    echo $interval->days;
    echo " \ndifference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days "; 
?>

回复收藏 0 原文

神经大条 2025-01-17 17:41:39

它看起来像一个错误，这取决于时区和时间。

使用 UTC 时区，就可以了：

$date1 = new DateTime("2022-03-01 00:00", new DateTimeZone("UTC"));
$date2 = new DateTime("2022-04-01 00:00", new DateTimeZone("UTC"));

相差0年1个月0天

对于欧洲/柏林时区的午夜，我们有 3 天的偏移量：

$date1 = new DateTime("2022-03-01 00:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 00:00", new DateTimeZone("Europe/Berlin"));

相差0年1个月3天

凌晨 01:00 还算可以：0 个月但 31 天

$date1 = new DateTime("2022-03-01 01:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 01:00", new DateTimeZone("Europe/Berlin"));

0年0月31天

12:00 一切恢复正常：1 个月

$date1 = new DateTime("2022-03-01 12:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 12:00", new DateTimeZone("Europe/Berlin"));

0年1个月0天

It looks like a bug, that depends on the timezone and hour.

With UTC timezone, it is OK :

$date1 = new DateTime("2022-03-01 00:00", new DateTimeZone("UTC"));
$date2 = new DateTime("2022-04-01 00:00", new DateTimeZone("UTC"));

difference 0 years, 1 months, 0 days

With Europe/Berlin timezone at midnight, we have the 3 days offset :

$date1 = new DateTime("2022-03-01 00:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 00:00", new DateTimeZone("Europe/Berlin"));

difference 0 years, 1 months, 3 days

At 01:00 in the morning, it is kind of OK : 0 month but 31 days

$date1 = new DateTime("2022-03-01 01:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 01:00", new DateTimeZone("Europe/Berlin"));

0 years, 0 months, 31 days

At 12:00, everything is right again: 1 month

$date1 = new DateTime("2022-03-01 12:00", new DateTimeZone("Europe/Berlin"));
$date2 = new DateTime("2022-04-01 12:00", new DateTimeZone("Europe/Berlin"));