Viewing file:  Time.php (1.09 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace ZipStream;
use DateInterval;
use DateTimeImmutable;
use DateTimeInterface;
use ZipStream\Exception\DosTimeOverflowException;
/**
* @internal
*/
abstract class Time
{
private const DOS_MINIMUM_DATE = '1980-01-01 00:00:00Z';
public static function dateTimeToDosTime(DateTimeInterface $dateTime): int
{
$dosMinimumDate = new DateTimeImmutable(self::DOS_MINIMUM_DATE);
if ($dateTime->getTimestamp() < $dosMinimumDate->getTimestamp()) {
throw new DosTimeOverflowException(dateTime: $dateTime);
}
$dateTime = DateTimeImmutable::createFromInterface($dateTime)->sub(new DateInterval('P1980Y'));
['year' => $year,
'mon' => $month,
'mday' => $day,
'hours' => $hour,
'minutes' => $minute,
'seconds' => $second
] = getdate($dateTime->getTimestamp());
return
($year << 25) |
($month << 21) |
($day << 16) |
($hour << 11) |
($minute << 5) |
($second >> 1);
}
}
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