/**
* Compares this {@code OffsetDateTime} to another date-time.
* The comparison is based on the instant.
*
* @param $datetime1 OffsetDateTime the first date-time to compare, not null
* @param $datetime2 OffsetDateTime the other date-time to compare to, not null
* @return int the comparator value, negative if less, positive if greater
*/
public static function compareInstant(OffsetDateTime $datetime1, OffsetDateTime $datetime2)
{
if ($datetime1->getOffset()->equals($datetime2->getOffset())) {
return $datetime1->toLocalDateTime()->compareTo($datetime2->toLocalDateTime());
}
$cmp = Long::compare($datetime1->toEpochSecond(), $datetime2->toEpochSecond());
if ($cmp === 0) {
$cmp = $datetime1->toLocalTime()->getNano() - $datetime2->toLocalTime()->getNano();
}
return $cmp;
}