IntlCalendar
PHP Manual

IntlCalendar::roll

(PHP 5.5.0, PECL >= 3.0.0a1)

IntlCalendar::roll — Add value to field without carrying into more significant fields

Descrizione

Stile orientato agli oggetti

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

Stile procedurale

bool intlcal_roll ( IntlCalendar $cal , int $field , mixed $amountOrUpOrDown )

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.

Elenco dei parametri

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).

Valori restituiti

Returns TRUE on success or FALSE on failure.

Esempi

Example #1 IntlCalendar::roll()

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

$cal = new IntlGregorianCalendar(2013, 5 /* June */, 30);

$cal->add(IntlCalendar::FIELD_DAY_OF_MONTH, 1);
var_dump(IntlDateFormatter::formatObject($cal)); // "01/07/2013, 00:00:00"

$cal->set(2013, 5 /* June */, 30);
$cal->roll(IntlCalendar::FIELD_DAY_OF_MONTH, true); // roll up, same as rolling +1
var_dump(IntlDateFormatter::formatObject($cal)); // "01/06/2013, 00:00:00"

Il precedente esempio visualizzerà:

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

Vedere anche:

IntlCalendar
PHP Manual