PHP

carbon date difference in hours

use CarbonCarbon
Carbon::parse()->parse('2022-09-20')->diffInHours(Carbon::parse()->parse('2022-09-21 10:50'));
// 34

Carbon difference between two dates

$dt      = Carbon::create(2012, 1, 31, 0);
$future  = Carbon::create(2012, 1, 31, 0);

$future  = $future->addMonth();

echo $dt->diffInDays($future); //31

carbon compare same date

$date1->toDateString() == $date2->toDateString()