PHP Unconference Europe 2015

DateTime::setDate

date_date_set

(PHP 5 >= 5.2.0)

DateTime::setDate -- date_date_setSets the date

Description

Object oriented style

public DateTime DateTime::setDate ( int $year , int $month , int $day )

Procedural style

DateTime date_date_set ( DateTime $object , int $year , int $month , int $day )

Resets the current date of the DateTime object to a different date.

Parameters

object

Procedural style only: A DateTime object returned by date_create(). The function modifies this object.

year

Year of the date.

month

Month of the date.

day

Day of the date.

Return Values

Returns the DateTime object for method chaining or FALSE on failure.

Changelog

Version Description
5.3.0Changed the return value on success from NULL to DateTime.

Examples

Example #1 DateTime::setDate() example

Object oriented style

<?php
$date 
= new DateTime();
$date->setDate(200123);
echo 
$date->format('Y-m-d');
?>

Procedural style

<?php
$date 
date_create();
date_date_set($date200123);
echo 
date_format($date'Y-m-d');
?>

The above examples will output:

2001-02-03

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

<?php
$date 
= new DateTime();

$date->setDate(2001228);
echo 
$date->format('Y-m-d') . "\n";

$date->setDate(2001229);
echo 
$date->format('Y-m-d') . "\n";

$date->setDate(2001143);
echo 
$date->format('Y-m-d') . "\n";
?>

The above example will output:

2001-02-28
2001-03-01
2002-02-03

See Also

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User Contributed Notes 2 notes

up
5
remy215 at laposte dot net
2 years ago
Be warned, DateTime::setDate() does not check for invalid input.

Illustration:
<?php
$dt
= new DateTime();
$dt->setDate(2012, 11, 31); // returns DateTime object and not false although this date does not exist
echo $dt->format('Y-m-d'); // output: 2012-12-01
?>

No error was generated on entering a non existing date, php silently changed it.
up
-1
dev dot alexander dot hillmer at gmail dot com
14 hours ago
$time = new DateTime();
$time->setDate(2014,11,-1);
echo date_format($time,"Y/m/d H:i:s");

outputs: 2014/10/30 instead of the right date 2014/10/31
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