PHP 两个日期之间的月数差异？

PHP Difference in months between two dates?

提问by Jaiff

Possible Duplicate:
How to calculate the difference between two dates using PHP?
Date Difference in php?

可能的重复：
如何使用 PHP 计算两个日期之间的差异？
php中的日期差异？

I have two dates in a variable like

我在一个变量中有两个日期，比如

$fdate = "2011-09-01"

$ldate = "2012-06-06"

Now I need the difference in months between them.
For example, the answer should be 10 if you calculate this from month 09 (September) to 06 (June) of next year - you'll get 10 as result.
How can I do this in PHP?

现在我需要它们之间的月差。
例如，如果您从明年 09 月（9 月）到 06 月（6 月）计算，答案应该是 10 - 结果是 10。
我怎样才能在 PHP 中做到这一点？

回答by Boby

A more elegant solution is to use DateTimeand DateInterval.

更优雅的解决方案是使用DateTime和DateInterval。

<?php

// @link http://www.php.net/manual/en/class.datetime.php
$d1 = new DateTime('2011-09-01');
$d2 = new DateTime('2012-06-06');

// @link http://www.php.net/manual/en/class.dateinterval.php
$interval = $d2->diff($d1);

$interval->format('%m months');

回答by Devator

Have a look at date_diff:

看看date_diff：

<?php
$datetime1 = date_create('2009-10-11');
$datetime2 = date_create('2009-10-13');
$interval = date_diff($datetime1, $datetime2);
echo $interval->format('%m months');
?>