IntlCalendar::roll() - IntlCalendar类
IntlCalendar::roll()
(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
Add value to field without carrying into more significant fields
说明
面向对象风格publicIntlCalendar::roll(int $field, mixed $amountOrUpOrDown): bool过程化风格
intlcal_roll(IntlCalendar$cal,int $field, mixed $amountOrUpOrDown): bool
Adds a(signed)amount to a field. The difference with respect to IntlCalendar::add() is that when the field value overflows, it does not carry into more significant fields.
参数
$calThe IntlCalendar resource.
$field One of the IntlCalendar date/time field constants. These are integer values between0and IntlCalendar::FIELD_COUNT
.
The(signed)amount to add to the field,TRUE
for rolling up(adding1), or FALSE
for rolling down(subtracting1).
返回值
Returns TRUE
on success or FALSE
on failure.
范例
IntlCalendar::roll()
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