Online PHP editor | refs for VLl5S

<?php $dateMin = new DateTimeImmutable('@'.PHP_INT_MIN); $dateMax = new DateTimeImmutable('@'.PHP_INT_MAX); $interval = new DateInterval('PT1S'); var_dump([ 'min' => $dateMin->format('Y-m-d H:i:s'), 'min -1 second' => $dateMin->sub($interval)->format('Y-m-d H:i:s'), 'max' => $dateMax->format('Y-m-d H:i:s'), 'max +1 second' => $dateMax->add($interval)->format('Y-m-d H:i:s'), ]);