|  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login
Bug #80047 DatePeriod doesn't support custom DateTimeImmutable
Submitted: 2020-09-03 12:01 UTC Modified: -
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:0 (0.0%)
From: oognic at gmail dot com Assigned:
Status: Open Package: Date/time related
PHP Version: 7.2.33 OS:
Private report: No CVE-ID: None
View Add Comment Developer Edit
Welcome! If you don't have a Git account, you can't do anything here.
You can add a comment by following this link or if you reported this bug, you can edit this bug over here.
Block user comment
Status: Assign to:
Bug Type:
From: oognic at gmail dot com
New email:
PHP Version: OS:


 [2020-09-03 12:01 UTC] oognic at gmail dot com
If we create a custom class that inherits from DateTimeImmutable, this class can be given as parameter to DatePeriod.

However, when iterating or trying to get the start or end dates, DatePeriod will try to return instances of our custom class but without using its constructor, which will produce incoherent objects.

See this PR for more details:

Test script:

class CustomDateTimeImmutable extends \DateTimeImmutable {

    private $foo;

    public function __construct($time = "now", $timezone = NULL)
        parent::__construct($time, $timezone);
        $this->foo = "foo"; 
    public function getFoo()
        return $this->foo;


$datePeriod = new \DatePeriod(new CustomDateTimeImmutable('2020-01-01'), new \DateInterval('P1D'), (new CustomDateTimeImmutable('2020-01-03'))->modify('+1 day'));


$strings = [];
foreach ($datePeriod as $date) {

Expected result:

Actual result:


Add a Patch

Pull Requests

Add a Pull Request

PHP Copyright © 2001-2021 The PHP Group
All rights reserved.
Last updated: Sun Sep 26 10:03:36 2021 UTC