phpFind difference between two dates in days

$days = (new DateTime($first))->diff( new DateTime($second) )->format('%a');ctrl + cyoutubegithub

`$days` number of days between two dates will be returned here	`DateTime` system object to manipulate dates/times
`$first` later date	`$second` earlier date
`'%a'` return number of days

echo (new DateTime('2022-01-02'))->diff( new DateTime('2021-12-11') )->format('%a');