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

Warning! The above-mentioned examples won't work if call them at the end of a month.

will output:

10-2017
10-2017

The following example will produce the same result:

$date = new DateTime('2017-10-31 00:00:00');
echo $date->format('m-Y')."\n";
$date->modify('-1 month');
echo $date->format('m-Y')."\n";

Plenty of ways how to solve the issue can be found in another thread: PHP DateTime::modify adding and subtracting months