Answers for "carbon get date from created_at"

laravel carbon create date from string

$today = Carbon::createFromFormat('d/m/Y H:i:s',  '19/02/2019 00:00:00'); 

$day = $today->subDays(1)->format('d/m/Y');

laravel carbon created_at date in current month

public function myMonthApts()
{
        return $this->appointments()
                        ->whereIn('status_id', [3,4])
                        ->whereYear('created_at', Carbon::now()->year)
                        ->whereMonth('created_at', Carbon::now()->month)
                        ->count();
}