Current date minus 4 month?

Question

I have date in this format (YYYYMM):

201201  // Gen, 2012
201202  // Feb, 2012
201203  // ecc

Let's say from 201203 I want to subtract 4 months. I can't do 201203 - 4 because it's = 201199

201203 - 4 should output 201111 (Nov, 2011)

Maybe i should convert my string to a date and then pass it to strtotime with -4 month?

Any suggest ?

look at functions explode and mktime. – OZ_ May 17 '12 at 10:24 — OZ_, May 17 '12 at 10:24
@OZ_, what help would explode be here? – Ash Burlaczenko May 17 '12 at 10:27 — Ash Burlaczenko, May 17 '12 at 10:27
http://php.net/manual/en/function.mktime.php – Javascript Coder May 17 '12 at 10:28 — Javascript Coder, May 17 '12 at 10:28
http://php.net/manual/en/function.date.php – Javascript Coder May 17 '12 at 10:28 — Javascript Coder, May 17 '12 at 10:28

score 38 · Accepted Answer · edited May 23 '17 at 11:46

38

You can use strtotime in PHP:

$date = strtotime('2012-05-01 -4 months');

This article will help you.

edited May 23 '17 at 11:46

Community

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answered May 17 '12 at 10:25

pearcoding

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score 9 · Answer 2 · answered May 17 '12 at 10:30

9

strtotime() can do it but you will need to add a day of the month for it to parse the date:

$input = '201203';

$input .= '01';

$date = strtotime($input .' -4 months');

echo date('Ym', $date);

Outputs Nov 2011:

answered May 17 '12 at 10:30

MrCode

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score 8 · Answer 3 · answered May 17 '12 at 10:35

Apart from the strtotime versions, since PHP 5.3 you can also use DateTime and DateInterval:

$date = DateTime::createFromFormat("Ym", "201201");
$interval = new DateInterval("P4M"); // 4 months
$fourMonthsEarlier = $date->sub($interval);
echo $fourMonthsEarlier->format("Ym");

score 2 · Answer 4 · answered Sep 04 '18 at 11:36

2

Final_date = Currentdate - 4 months

<?php
$current_date = date("Y-m-d");

$final_date = date("Y-m-d", strtotime($current_date." -4 months"));

echo $final_date;

answered Sep 04 '18 at 11:36

Kiran Reddy

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score 1 · Answer 5 · answered Apr 17 '14 at 08:10

1

for EX $da=2014-04-01

if u want to minus 6 months use this..

$date = strtotime($da .' -4 months');
$final=date('Y-m-d', $date);

echo $final;

answered Apr 17 '14 at 08:10

score 0 · Answer 6 · answered May 17 '12 at 10:25

0

You can use strtotime to convert the string to a UNIX timestamp, which is in seconds. time() will give you the current UNIX timestamp. Subtract them to get how old the date is in seconds, and divide by 60*60*24 to get it in days

answered May 17 '12 at 10:25

Norse

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score 0 · Answer 7 · answered Aug 29 '14 at 12:14

0

Previous code not working:

$da='2014-08-29';
$date = strtotime($da .' -6 months');
$final=date('Y-m-d', $date);
echo $final;
$date = strtotime($da .' -7 months');
$final=date('Y-m-d', $date);
echo $final;

February is missing!

answered Aug 29 '14 at 12:14

Bogdan Mantescu

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only 29th of February missing – vladkras Jul 09 '17 at 18:10

score -1 · Answer 8 · edited Sep 15 '16 at 13:06

-1

$date = '2016-09-01 00:00:00.000000';

$date2 = date("Y-m-d H:i:s.u", strtotime($date." -4 months"));

echo $date2;

on run this code you will get 2016-05-01 00:00:00.000000

edited Sep 15 '16 at 13:06

Nikolay Mihaylov

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answered Sep 15 '16 at 12:36

Gaurav Dixit

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Current date minus 4 month?

8 Answers8