Finding the date for 29th last month, two months ago, etc

Question

I'm looking to find the date of the 29th of this month, the 29th of next month, the 29th of last month and so on...

I know you can use this kind of code to find days of the week:

$friday_last = date("d/m/Y", strtotime("last Friday"));
$friday_due = date("d/m/Y", strtotime("this Friday"));

Is there a similar way to find a certain day (29th) of each month or would I have to use a different code?

Answer 1

You need to use DateTime() as it makes working with dates much easier. You'll notice I start by going to the first day of each month. That's so this doesn't break when you get to the 29th-30th of each month as weird date things start to happen.

echo (new DateTime())->modify('first day of this month')->format("29/m/Y");
echo (new DateTime())->modify('first day of previous month')->format("29/m/Y");
echo (new DateTime())->modify('first day of next month')->format("29/m/Y");

Demo

echo (new DateTime())->modify('first day of this month')->modify('-2 months')->format("29/m/Y");

Demo