IntlCalendar::add
(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
IntlCalendar::add — Add a (signed) amount of time to a field
Описание
Объектно-ориентированный стиль
$field
, int $amount
) : boolПроцедурный стиль
Add a signed amount to a field. Adding a positive amount allows advances in time, even if the numeric value of the field decreases (e.g. when working with years in BC dates).
Other fields may need to adjusted – for instance, adding a month to the 31st of January will result in the 28th (or 29th) of February. Contrary to IntlCalendar::roll(), when a value wraps around, more significant fields may change. For instance, adding a day to the 31st of January will result in the 1st of February, not the 1st of January.
Список параметров
-
cal -
The IntlCalendar resource.
-
field -
Одна из представленных в классе IntlCalendar констант полей типа дата/время. Целое число от
0доIntlCalendar::FIELD_COUNT. -
amount -
The signed amount to add to the current field. If the amount is positive, the instant will be moved forward; if it is negative, the instant will be moved into the past. The unit is implicit to the field type. For instance, hours for
IntlCalendar::FIELD_HOUR_OF_DAY.
Возвращаемые значения
Returns true on success или false в случае возникновения ошибки.
Примеры
Пример #1 IntlCalendar::add()
<?php
ini_set('intl.default_locale', 'fr_FR');
ini_set('date.timezone', 'UTC');
$cal = new IntlGregorianCalendar(2012, 0 /* January */, 31);
echo IntlDateFormatter::formatObject($cal), "\n";
$cal->add(IntlCalendar::FIELD_MONTH, 1);
echo IntlDateFormatter::formatObject($cal), "\n";
$cal->add(IntlCalendar::FIELD_DAY_OF_MONTH, 1);
echo IntlDateFormatter::formatObject($cal), "\n";
Результат выполнения данного примера:
31 janv. 2012 00:00:00 29 févr. 2012 00:00:00 1 mars 2012 00:00:00