如何减少两个日期在php [英] How to Minus two dates in php

问题描述

我想在php中减去两个日期

i want to minus two dates in php

例如：

$date1 = 08/16/2013;
$date2 = 08/23/2013;
$answer = date2 - date1;

$答案应该是7，我该怎么办？
非常感谢你

the $answer should be 7, How will i do that? thank you so much

推荐答案

开始使用 DateTime 日期/时间操纵类：

Start using DateTime class for date/time manipulation :

$date1 = new DateTime('08/16/2013');
$date2 = new DateTime('08/23/2013');
$diff = $date1->diff($date2);
print_r($diff); // or $diff->days

输出：

DateInterval Object
(
    [y] => 0
    [m] => 0
    [d] => 7
    [h] => 0
    [i] => 0
    [s] => 0
    [invert] => 0
    [days] => 7
)

阅读更多关于 DateTime：diff（）。

_{请注意，各种 strtotime （）示例在日期/时间差计算中不正确。最简单的例子是 2013-03-31 21:00 和 2013-03-30 21:00 之间的区别。对于肉眼是肉眼确切1天的差异，但如果您减去此2个日期，您将得到 82800 秒，这是 0.95833333333333 天。这是因为从冬天到夏天的时间变化。 DateTime处理闰年和时区。}

_{Please note that various strtotime() examples are not correct in date/time difference calculation. The simplest example is difference between 2013-03-31 21:00 and 2013-03-30 21:00. Which for naked eye is exact 1 day difference, but if you do subtract this 2 dates, you will get 82800 seconds which is 0.95833333333333 days. This is because of the time change from winter to summer time. DateTime handles leap years and time-zones properly.}

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