PHP DateTime->diff dont works as expected

Asked Jul 10 '13 at 11:27

Active Jul 10 '13 at 11:50

Viewed 37 times

I'm trying to use DateTime->diff to get the number of months between two dates. The problem is I cant understand how works this function. Try this examples, notice that i'm adding one month every output:

$datetime1 = new DateTime('2013-01-01');
$datetime2 = new DateTime('2013-01-01');
$interval = $datetime1->diff($datetime2);
echo $interval->m

Output is 0.

$datetime1 = new DateTime('2013-01-01');
$datetime2 = new DateTime('2013-02-01');
$interval = $datetime1->diff($datetime2);
echo $interval->m

Output is 1.

$datetime1 = new DateTime('2013-01-01');
$datetime2 = new DateTime('2013-03-01');
$interval = $datetime1->diff($datetime2);
echo $interval->m

Output is... 1??? How is this possible?? Month is March, not February. Same error happens in months 6-7

EDIT: Note this question ISNT about February cause this happens in months 6-7

Thanks for you attention.

edited Jul 10 '13 at 11:50

asked Jul 10 '13 at 11:27

Adrián Granado Blanco

Gordon have no idea about this issue. The real answer is: $datetime1 = new DateTime('2013-01-01',new DateTimeZone("UTC")); $datetime2 = new DateTime('2013-02-01',new DateTimeZone("UTC")); – Adrián Granado Blanco Jul 10 '13 at 12:03
In which case it is a dupe of [PHP's DateTime::Diff gets it wrong?](http://stackoverflow.com/q/9695870) or similar questions. – Martijn Pieters Jul 10 '13 at 12:15
Yep, it is very easy to search about the solution when YOU ALREADY know the solution, right? :) – Adrián Granado Blanco Jul 10 '13 at 13:56

PHP DateTime->diff dont works as expected

0 Answers0