Php/docs/datetime.setisodate
DateTime::setISODate
date_isodate_set
(PHP 5 >= 5.2.0, PHP 7)
DateTime::setISODate -- date_isodate_set — Sets the ISO date
Description
Object oriented style
public DateTime::setISODate
( int $year
, int $week
[, int $dayOfWeek
= 1
] ) : DateTime
Procedural style
date_isodate_set
( DateTime $object
, int $year
, int $week
[, int $dayOfWeek
= 1
] ) : DateTime
Set a date according to the ISO 8601 standard - using weeks and day offsets rather than specific dates.
Parameters
object
- Procedural style only: A DateTime object returned by date_create(). The function modifies this object.
year
- Year of the date.
week
- Week of the date.
dayOfWeek
- Offset from the first day of the week.
Examples
Example #1 DateTime::setISODate() example
Object oriented style
<?php$date = new DateTime();$date->setISODate(2008, 2);echo $date->format('Y-m-d') . "\n";$date->setISODate(2008, 2, 7);echo $date->format('Y-m-d') . "\n";?>
Procedural style
<?php$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 examples will output:
2008-01-07 2008-01-13
Example #2 Values exceeding ranges are added to their parent values
<?php$date = new DateTime();$date->setISODate(2008, 2, 7);echo $date->format('Y-m-d') . "\n";$date->setISODate(2008, 2, 8);echo $date->format('Y-m-d') . "\n";$date->setISODate(2008, 53, 7);echo $date->format('Y-m-d') . "\n";?>
The above example will output:
2008-01-13 2008-01-14 2009-01-04
Example #3 Finding the month a week is in
<?php$date = new DateTime();$date->setISODate(2008, 14);echo $date->format('n');?>
The above examples will output:
3