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Bug #73120 Wrong calculation
Submitted: 2016-09-20 08:25 UTC Modified: 2017-02-26 04:22 UTC
Avg. Score:1.0 ± 0.0
Reproduced:0 of 1 (0.0%)
From: carletto90 at gmail dot com Assigned:
Status: No Feedback Package: Date/time related
PHP Version: 7.0.11 OS: Windows 10
Private report: No CVE-ID: None
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From: carletto90 at gmail dot com
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 [2016-09-20 08:25 UTC] carletto90 at gmail dot com
From manual page:

Test script:

$date = new \DateTime('2016-03-01');
$date2 = new \DateTime('2016-03-31');
$diff = $date->diff($date2);

echo 'Years: '.$diff->y."\n";
echo 'Months: '.$diff->m."\n";
echo 'Days: '.$diff->d."\n";


Expected result:
Years: 0
Months: 1
Days: 0

Actual result:
Years: 0
Months: 1
Days: 1


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 [2016-11-25 19:31 UTC]
the current result is strange, but why the correct result is 1 month? 

2016-03-31  -  2016-03-01 ==> 30 days
2016-04-01  -  2016-03-01 ==> 1 month

I think this is the correct calculation.
 [2017-02-12 18:12 UTC]
-Status: Open +Status: Feedback
 [2017-02-12 18:12 UTC]
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

Thank you for your interest in PHP.

I can't reproduce this:

derick@whisky:~/dev/timelib $ php

$date = new \DateTime('2016-03-01');
$date2 = new \DateTime('2016-03-31');
$diff = $date->diff($date2);

echo 'Years: '.$diff->y."\n";
echo 'Months: '.$diff->m."\n";
echo 'Days: '.$diff->d."\n";

Years: 0
Months: 0
Days: 30

Which timezone have you configured?
 [2017-02-26 04:22 UTC] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
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