DateTime::setDate

date_date_set

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

DateTime::setDate -- date_date_setAssigne la date

Description

Style orienté objet

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

Style procédural

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

Assigne la date courante de l'objet DateTime à une nouvelle date.

Comme DateTimeImmutable::setDate() mais fonctionne avec DateTime et modifie l'objet existant.

La version procédurale prend un objet DateTime comme premier argument.

Liste de paramètres

object

Style procédural uniquement : Un objet DateTime retourné par la fonction date_create(). Cette fonction modifie cet objet.

year

Année de la date.

month

Mois de la date.

day

Jour de la date.

Valeurs de retour

Retourne l'objet modifié DateTime pour chainer les méthodes.

Voir aussi

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User Contributed Notes 3 notes

up
7
kevin dot nadin at gmail dot com
7 years ago
Be carreful about this bug in php 5.6 and lower (fixed in php 7.0 and higher) :

<?php
$date
= new DateTime("first day of last month");
echo
$date->format('Y-m-d');
echo 
' => ' ;
$date->setDate(2013, 2, 3);
echo
$date->format('Y-m-d');
?>

Output <=5.6 : 2017-03-01 => 2013-02-01
Output >=7.0 : 2017-03-31 => 2013-02-03

Same goes for "Last day of last month", and the funny part, it will take the last day of the new month setted by setDate

Example with a Leap Year :
<?php
$date
= new DateTime("last day of last month");
echo
$date->format('Y-m-d');
echo 
' => ' ;
$date->setDate(2012, 2, 3);
echo
$date->format('Y-m-d');
?>

Output <=5.6 : 2017-03-31 => 2012-02-29
Output >=7.0 : 2017-03-31 => 2012-02-03
up
3
remy215 at laposte dot net
12 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
-4
kevin dot nadin at gmail dot com
7 years ago
Correction on the previous comment :

Bug fixed in php 7.0.17 and 7.1.3, for the version 7.0.0 to 7.0.16 and 7.1.0 to 7.1.2, the bug is still present
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