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 ?

Answer 1

You can use strtotime in PHP:

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

This article will help you.