DateTime
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DateTime::setISODate

(PHP 5 >= 5.2.0)

DateTime::setISODate — Sets the ISO date

说明

public DateTime DateTime::setISODate ( int $year , int $week [, int $day ] )
DateTime date_isodate_set ( DateTime $object , int $year , int $week [, int $day ] )

Set a date according to the ISO 8601 standard - using weeks and day offsets rather than specific dates.

参数

object

Procedural style only: A DateTime object returned by date_create()

year

Year of the date.

week

Week of the date.

day

Offset from the first day of the week.

返回值

Returns the modified DateTime.

范例

Example #1 Finding the date from a week number and day offset

<?php
date_default_timezone_set('Europe/London');

$datetime = new DateTime();

// Offset from start of week 2 (7) = 5
$datetime->setISODate(2008, 2, 5); // Day 5 of week 2 of 2008 is the 11th of January. 

// Offset from start of week 2 (7) = 10
$datetime->setISODate(2008, 2, 10); // Day 10 of week 2 of 2008 is the 16th of January.
?>

Example #2 Finding the month a week is in

<?php
date_default_timezone_set('Europe/London');

$datetime = date_create();
date_isodate_set($datetime, 2008, 6); // Week 6 of 2008 is in February.
?>

参见

DateTime
PHP 手册