/**
* Returns a copy of this {@code OffsetDateTime} with the specified number of hours added.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param int $hours the hours to add, may be negative
* @return OffsetDateTime an {@code OffsetDateTime} based on this date-time with the hours added, not null
* @throws DateTimeException if the result exceeds the supported date range
*/
public function plusHours($hours)
{
return $this->_with($this->dateTime->plusHours($hours), $this->offset);
}
/**
* Returns a copy of this {@code ZonedDateTime} with the specified number of hours added.
* <p>
* This operates on the instant time-line, such that adding one hour will
* always be a duration of one hour later.
* This may cause the local date-time to change by an amount other than one hour.
* Note that this is a different approach to that used by days, months and years,
* thus adding one day is not the same as adding 24 hours.
* <p>
* For example, consider a time-zone where the spring DST cutover means that the
* local times 01:00 to 01:59 occur twice changing from offset +02:00 to +01:00.
* <ul>
* <li>Adding one hour to 00:30+02:00 will result in 01:30+02:00
* <li>Adding one hour to 01:30+02:00 will result in 01:30+01:00
* <li>Adding one hour to 01:30+01:00 will result in 02:30+01:00
* <li>Adding three hours to 00:30+02:00 will result in 02:30+01:00
* </ul>
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param int $hours the hours to add, may be negative
* @return ZonedDateTime a {@code ZonedDateTime} based on this date-time with the hours added, not null
* @throws DateTimeException if the result exceeds the supported date range
*/
public function plusHours($hours)
{
return $this->resolveInstant($this->dateTime->plusHours($hours));
}
