datediff - PHP 认为从 4 月 1 日到 7 月 1 日之间有 2 个月

Question

PHP 5.5.1.14：

$d1 = new DateTime("2014-04-01 00:00");
$d2 = new DateTime("2014-07-01 00:00");
$d3 = $d2->diff($d1);
echo $d3->m . " months, " . $d3->d . " days";

返回

2个月30天

有没有办法在 3 个月内可靠地获得直观的结果？（这是不是一个错误？）顺便说一句，当使用 May1st 和 Aug 1st 时，它给出了 3 个月的预期结果......

score 1 · Accepted Answer

If time doesn't matter and you need just months diff, you can take second date with '23:59' time.

$d1 = new DateTime("2014-04-01 00:00");
$d2 = new DateTime("2014-07-01 23:59");
$d3 = $d2->diff($d1);
echo $d3->m . " months"

returns

3 months

And all other date pairs since 2014-01-01 - 2014-04-01 until 2014-12-01 - 2015-03-01 will return 3 months

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