I need to get the time difference.But carbon does not calculate.
date1 2022-03-30 00:00:00
date2 2022-03-30 21:00:00
$interval = $date1->diffInSeconds($date2); -> OUTPUT: 0
$interval2 = $date1->diffAsCarbonInterval($date2); -> OUTPUT:
You should parse all the data with Carbon to convert it to Carbon instance, then you can get the difference
$diffInSeconds = Carbon\Carbon::parse('2022-03-30 00:00:00')->diffInSeconds(Carbon\Carbon::parse('2022-03-30 21:00:00'));