src/Viserio/Component/Cookie/AbstractCookie.php
protected function normalizeExpires($expiration = null): int
    {
        $expires   = $this->getTimestamp($expiration);
        $tsExpires = $expires;

        if (\is_string($expires)) {
            $tsExpires = \strtotime($expires);
            $is32Bit   = \PHP_INT_SIZE <= 4;

            // if $tsExpires is invalid and PHP is compiled as 32bit. Check if it fail reason is the 2038 bug
            if ($is32Bit && ! \is_int($tsExpires)) {
                $dateTime = new Chronos($expires);

                if ($dateTime->format('Y') > 2038) {
                    $tsExpires = \PHP_INT_MAX;
                }
            }
        }

        if (! \is_int($tsExpires) || $tsExpires < 0) {
            throw new InvalidArgumentException('Invalid expires time specified.');
        }

        return $tsExpires;
    }
protected function normalizeExpires($expiration = null): int
    {
        $expires   = $this->getTimestamp($expiration);
        $tsExpires = $expires;

        if (\is_string($expires)) {
            $tsExpires = \strtotime($expires);
            $is32Bit   = \PHP_INT_SIZE <= 4;

            // if $tsExpires is invalid and PHP is compiled as 32bit. Check if it fail reason is the 2038 bug
            if ($is32Bit && ! \is_int($tsExpires)) {
                $dateTime = new Chronos($expires);

                if ($dateTime->format('Y') > 2038) {
                    $tsExpires = \PHP_INT_MAX;
                }
            }
        }

        if (! \is_int($tsExpires) || $tsExpires < 0) {
            throw new InvalidArgumentException('Invalid expires time specified.');
        }

        return $tsExpires;
    }
Normalizes the expiration value.

@param null|\DateTimeInterface|int|string $expiration

@throws \Viserio\Component\Contract\Cookie\Exception\InvalidArgumentException

@return int