DateTimeImmutable::setISODate
PHP function
Edit on GitHub ✎
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
Sets the ISO date
Description
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.
Parameters
yearYear of the date.
weekWeek of the date.
dayOfWeekOffset from the first day of the week.
Return Values
Modifiedobject
Examples
DateTimeImmutable::setISODate() example
Oop
php
<?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";The above example will output:
output
2008-01-07
2008-01-13Procedural
php
<?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";The above example will output:
output
2008-01-07
2008-01-13Values exceeding ranges are added to their parent values
php
<?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";The above example will output:
output
2008-01-13
2008-01-14
2009-01-04Finding the month a week is in
php
<?php
$date = new DateTimeImmutable();
$newDate = $date->setISODate(2008, 14);
echo $newDate->format('n');The above example will output:
output
3