php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #78383 Casting a DateTime to array no longer returns its properties
Submitted: 2019-08-07 13:03 UTC Modified: 2019-08-08 08:23 UTC
From: jeremy at derusse dot com Assigned: nikic (profile)
Status: Closed Package: Date/time related
PHP Version: 7.4.0beta1 OS: Linux
Private report: No CVE-ID: None
View Add Comment Developer Edit
Anyone can comment on a bug. Have a simpler test case? Does it work for you on a different platform? Let us know!
Just going to say 'Me too!'? Don't clutter the database with that please !
Your email address:
MUST BE VALID
Solve the problem:
42 - 20 = ?
Subscribe to this entry?

 
 [2019-08-07 13:03 UTC] jeremy at derusse dot com 
Description:
------------
Casting an instance of \Datetime to an array should return date's properties. Since PHP 7.4, the array is empty.

see https://3v4l.org/epBRn

Test script:
---------------
var_dump((array) new \Datetime('2000-01-01'));

Expected result:
----------------
array(3) {
  ["date"]=>
  string(26) "2000-01-01 00:00:00.000000"
  ["timezone_type"]=>
  int(3)
  ["timezone"]=>
  string(16) "Europe/Amsterdam"
}

Actual result:
--------------
array(0) {
}

Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2019-08-07 16:02 UTC] duncan3dc@php.net 
Casting to an array is undefined, see here:
https://www.php.net/manual/en/language.types.type-juggling.php
("The behaviour of an automatic conversion to array is currently undefined")
 [2019-08-07 16:21 UTC] cmb@php.net
-Status: Open +Status: Not a bug -Assigned To: +Assigned To: cmb
 [2019-08-07 16:21 UTC] cmb@php.net 
> Casting to an array is undefined, […]

Not wrt. objects[1]:

| An array converts to an object with properties named by keys and
| corresponding values.

Anyhow, this is a deliberate change[2]; DateTime objects are not
supposed to have public properties.

[1] <https://www.php.net/manual/en/language.types.object.php#language.types.object.casting>
[2] <https://github.com/php/php-src/blob/be794894ef30764e54a8a52fa6c085f3c4a88b14/UPGRADING#L56-L57>
 [2019-08-07 16:25 UTC] nikic@php.net 
We could easily restore the previous behavior wrt array casts here -- we're already keeping compatibility with json_encode() for example.

What's the use case?
 [2019-08-07 16:30 UTC] cmb@php.net
-Status: Not a bug +Status: Feedback -Assigned To: cmb +Assigned To: nikic
 [2019-08-07 16:30 UTC] cmb@php.net 
Well, then ... :)
 [2019-08-07 20:41 UTC] jeremy at derusse dot com
-Status: Feedback +Status: Assigned
 [2019-08-07 20:41 UTC] jeremy at derusse dot com 
We (symfony) implemented a generic serialization mechanism that uses array casts to extract state from objects. 
DateTime was not needing any special care, but now it would because the behavior changed between php 7.3 and 7.4, IMHO, it's a BC break.

Not https://3v4l.org/rdhKg: another change in the bevahior of \Datetime casting.
 [2019-08-08 07:53 UTC] nikic@php.net
-Summary: Casting a \Datetime to array no longer returns it properties +Summary: Casting a DateTime to array no longer returns its properties
 [2019-08-08 07:56 UTC] nikic@php.net 
Automatic comment on behalf of nikita.ppv@gmail.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=fc17bfaacfd48b3952652792bf684ff223499678
Log: Fixed bug #78383
 [2019-08-08 07:56 UTC] nikic@php.net
-Status: Assigned +Status: Closed
 [2019-08-08 08:23 UTC] jeremy at derusse dot com 
Thank you @nikic
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Thu Apr 18 14:01:31 2024 UTC