How to subtract 4 months from today's date?

Question

I need to declare two dates in \"Ymd\" format: $toDate and $fromDate.

$toDate represents today\'s date and

Answer 1

see the code below...

$fourmonthsback = date("Ymd", mktime(0, 0, 0, date("m")-4, date("d"),   date("Y")));

OR

$fourmonthsback = mktime(0, 0, 0, date("m")-4, date("d"),   date("Y"));