Excel zwraca liczbę całkowitą z daty laravel
PhpSpreadsheet does not support value binders on imports. This is a mistake in
our documentation.
For date conversion, you are most likely dealing with an excel timestamp. You
can try to convert using:
\PhpOffice\PhpSpreadsheet\Shared\Date::excelToDateTimeObject($row['date'])
Lokesh003Coding