DateTimeImmutable::setISODate

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    DateTimeImmutable::setISODate — Sets the ISO date

    Descrizione

    #[\NoDiscard]
    public DateTimeImmutable::setISODate(int $year, int $week, int $dayOfWeek = 1): DateTimeImmutable

    Returns a new DateTimeImmutable object with the date set according to the ISO 8601 standard - using weeks and day offsets rather than specific dates.

    Elenco dei parametri

    year

    Year of the date.

    week

    Week of the date.

    dayOfWeek

    Offset from the first day of the week.

    Valori restituiti

    Returns a new DateTimeImmutable object with the modified data.

    Esempi

    Example #1 DateTimeImmutable::setISODate() example

    Stile orientato agli oggetti

    <?php

    $date     = new DateTimeImmutable();

    $newDate = $date->setISODate(2008, 2);
    echo     $newDate->format('Y-m-d') . "\n";

    $newDate = $date->setISODate(2008, 2, 7);
    echo     $newDate->format('Y-m-d') . "\n";

    Il precedente esempio visualizzerà:

    2008-01-07
2008-01-13

    Stile procedurale

    <?php

    $date     = date_create();

    date_isodate_set($date, 2008, 2);
    echo     date_format($date, 'Y-m-d') . "\n";

    date_isodate_set($date, 2008, 2, 7);
    echo     date_format($date, 'Y-m-d') . "\n";

    Il precedente esempio visualizzerà:

    2008-01-07
2008-01-13

    Example #2 Values exceeding ranges are added to their parent values

    <?php

    $date     = new DateTimeImmutable();

    $newDate = $date->setISODate(2008, 2, 7);
    echo     $newDate->format('Y-m-d') . "\n";

    $newDate = $date->setISODate(2008, 2, 8);
    echo     $newDate->format('Y-m-d') . "\n";

    $newDate = $date->setISODate(2008, 53, 7);
    echo     $newDate->format('Y-m-d') . "\n";

    Il precedente esempio visualizzerà:

    2008-01-13
2008-01-14
2009-01-04

    Example #3 Finding the month a week is in

    <?php

    $date     = new DateTimeImmutable();
    $newDate = $date->setISODate(2008, 14);
    echo     $newDate->format('n');

    Il precedente esempio visualizzerà:

    3

    Vedere anche:

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    User Contributed Notes 1 note

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    samuele dot catuzzi at gmail dot com
    9 days ago
    note that giving a week out of range will produce a date for a different year

example:
<?php
$date = new DateTimeImmutable();

$newDate = $date->setISODate(2026, 53);
echo $newDate->format('Y-m-d') . "\n";
// will print "2026-12-28"  (2026 has 53 weeks)

$newDate = $date->setISODate(2026, 54);
echo $newDate->format('Y-m-d') . "\n";
// will print 2027-01-04 which is the 1st week of 2027
?>
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