IntlCalendar::roll

(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)

IntlCalendar::rollAdd value to field without carrying into more significant fields

Opis

Styl obiektowy

public IntlCalendar::roll ( int $field , mixed $amountOrUpOrDown ) : bool

Styl proceduralny

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.

Parametry

cal

The IntlCalendar resource.

field

One of the IntlCalendar date/time field constants. These are integer values between 0 and IntlCalendar::FIELD_COUNT.

amountOrUpOrDown

The (signed) amount to add to the field, TRUE for rolling up (adding 1), or FALSE for rolling down (subtracting 1).

Zwracane wartości

Returns TRUE on success or FALSE on failure.

Przykłady

Przykład #1 IntlCalendar::roll()

<?php
ini_set
('date.timezone''Europe/Lisbon');
ini_set('intl.default_locale''pt_PT');

$cal = new IntlGregorianCalendar(2013/* June */30);

$cal->add(IntlCalendar::FIELD_DAY_OF_MONTH1);
var_dump(IntlDateFormatter::formatObject($cal)); // "01/07/2013, 00:00:00"

$cal->set(2013/* June */30);
$cal->roll(IntlCalendar::FIELD_DAY_OF_MONTHtrue); // roll up, same as rolling +1
var_dump(IntlDateFormatter::formatObject($cal)); // "01/06/2013, 00:00:00"

Powyższy przykład wyświetli:

string(20) "01/07/2013, 00:00:00"
string(20) "01/06/2013, 00:00:00"

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