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IntlCalendar::fieldDifferenceCalculate difference between given time and this objectʼs time


Объектно-ориентированный стиль

public IntlCalendar::fieldDifference ( float $when , int $field ) : int

Процедурный стиль

intlcal_field_difference ( IntlCalendar $cal , float $when , int $field ) : int

Return the difference between the given time and the time this object is set to, with respect to the quantity specified the field parameter.

This method is meant to be called successively, first with the most significant field of interest down to the least significant field. To this end, as a side effect, this calendarʼs value for the field specified is advanced by the amount returned.

Список параметров


The IntlCalendar resource.


The time against which to compare the quantity represented by the field. For the result to be positive, the time given for this parameter must be ahead of the time of the object the method is being invoked on.


The field that represents the quantity being compared.

Одна из представленных в классе IntlCalendar констант полей типа дата/время. Целое число от 0 до IntlCalendar::FIELD_COUNT.

Возвращаемые значения

Returns a (signed) difference of time in the unit associated with the specified field или FALSE в случае возникновения ошибки.


Пример #1 IntlCalendar::fieldDifference()


$cal1 IntlCalendar::fromDateTime('2012-02-29 09:00:11');
$cal2 IntlCalendar::fromDateTime('2013-03-01 09:19:29');
$time $cal2->getTime();

"Time before: "IntlDateFormatter::formatObject($cal1), "\n";

"The difference in time is %d year(s), %d month(s), "
"%d day(s), %d hour(s) and %d minute(s)\n",

//now it was advanced to the target time, exception for the seconds,
//for which we did not measure the difference
echo "Time after: "IntlDateFormatter::formatObject($cal1), "\n";

Результат выполнения данного примера:

Time before: 29 févr. 2012 09:00:11
The difference in time is 1 year(s), 0 month(s), 1 day(s), 0 hour(s) and 19 minute(s)
Time after: 1 mars 2013 09:19:11