PHP subtract 1 month from date formatted with date ('m-Y')

Question

I\'m trying to subtract 1 month from a date.

$today = date(\'m-Y\');

This gives: 08-2016

How can I subtract a month to get 07

Answer 1

I used this to prevent the "last days of month"-error. I just use a second strtotime() to set the date to the first day of the month: