How to get the difference of two dates in months?

Question

PHP

So there are 2 dates. I need the difference between them in months, but the methods that I found do not work. The fact is that if there are 2 dates 2020-01-15 and 2020-02-13 , then for example the date_diff() function gives 0 because there are no 30 days between the dates, and I need the 1st of the next month - this is plus one month already. That is, 2020-01-31 and 2020-02-01 are already a difference of 1 month.

Answer 1

And what prevents you from mathematically calculating (Y2 * 12 + M2) - (Y1 * 12 + M1)?

Answer 2

see DatePeriod class

Answer 3

$date1 = new DateTime("2020-01-15");
$date1->modify('first day of this month');
$date2 = new DateTime("2020-02-13");
$date2->modify('last day of this month');
$diff = $date1->diff($date2);
echo "difference " . $diff->m." months";

Answer 4

Use the Carbon library :

$this_month = Carbon::parse('2019-07-05')->floorMonth(); // returns 2019-07-01
$start_month = Carbon::parse('2019-06-30')->floorMonth(); // returns 2019-06-01
$diff = $start_month->diffInMonths($this_month);  // returns 1