Given date + 2 months working wrong for december 30,31

Question

I want to get first date of +2 months of given date,Iam using below function to get this .

$date = '2015-12-31';
echo $date = date('1-m-Y', strtotime('+2 month', strtotime($date)));

This was working fine.But for december 30,31 this is not giving result as expected.for date 2015-12-30 it gives result '1-03-2016'.I know because of february having 29 days this gives this result.But expected result is '01-02-2016'. This can be solved by writing new function.But i want to go with built in functions.Please Help.

01-02-2016 (Feb 1) is just over +1 month from 2015-12-30, ... and not anywhere close to +2 months. Why is 01-02-2016 your expected result? — BareNakedCoder, Dec 29 '15 at 04:37
@BareNakedCoder I want 1st date of +2 month from month of given date. — Rex Rex, Dec 29 '15 at 04:39
Not misread. OP has edited question to say he wants 1st day of month containing $date + 2 months. — BareNakedCoder, Dec 29 '15 at 04:42
Possible duplicate of [PHP date() and strtotime() return wrong months on 31st](http://stackoverflow.com/questions/9058523/php-date-and-strtotime-return-wrong-months-on-31st) — Thamilhan, Dec 29 '15 at 04:42
Your logic on this problem is wrong, why are you specifying the first `$date` at all? There should be no need to calculate it from the 31st if what you want is two months from the 1st. — Devon Bessemer, Dec 29 '15 at 04:46

Thamilhan · Accepted Answer · 2015-12-29T04:53:32.453

Coming to your way, convert your date to 1st of your desired month and then calculate. Like this:

<?php
$date = '2015-12-31';
$date = date('1-m-Y', strtotime($date));
echo $date = date('1-m-Y', strtotime('+2 months',strtotime($date)));

You get:

1-02-2016

Instead, you can use first day of +2 months:

echo $date = date('d-m-Y', strtotime('first day of +2 months',strtotime($date)));

Will output (as you desire):

01-02-2016

score 1 · Answer 2 · answered Dec 29 '15 at 04:51

date('Y-m-d', strtotime('first day of +2 month', strtotime($date)));

first day of maps 2015-12-30 to 2015-12-01 then +2 month maps it to 2016-02-01. By mapping to the 1st day of month of your starting date BEFORE adding +2 months, you don't have to to worry about short months.

Given date + 2 months working wrong for december 30,31

2 Answers2