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Doc Bug #49480 DateTime::createFromFormat uses current system time to fill missing fields
Submitted: 2009-09-06 06:48 UTC Modified: 2009-09-12 09:09 UTC
From: grodny at oneclick dot sk Assigned:
Status: Closed Package: Documentation problem
PHP Version: 5.3.0 OS:
Private report: No CVE-ID: None
View Developer Edit
 [2009-09-06 06:48 UTC] grodny at oneclick dot sk 
Description:
------------
DateTime::createFromFormat uses current system time to fill missing fields instead of zero values, which leads to inconsistent comparsions
and intervals returned by DateTime::diff.

DateTime::createFromFormat('Y-m-d', '2009-03-02') should always create

object(DateTime)#1 (3) {
  ["date"]=>
  string(19) "2009-03-02 00:00:00"
  ...
}


Reproduce code:
---------------
<?php

$A = DateTime::createFromFormat('Y-m-d', '2009-03-02');
sleep(2);
$B = DateTime::createFromFormat('Y-m-d', '2009-03-02');

var_dump($A == $B);

?>

Expected result:
----------------
bool(true)

Actual result:
--------------
bool(false)

Patches

Pull Requests

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AllCommentsChangesGit/SVN commitsRelated reports
 [2009-09-06 10:44 UTC] derick@php.net 
This is correct behaviour, you can change it by using a format like:

<?php
var_dump( DateTime::createFromFormat('!Y-m-d', '2009-03-02') );
?>
object(DateTime)#1 (3) {
  ["date"]=>
  string(19) "2009-03-02 00:00:00"
  ["timezone_type"]=>
  int(3)
  ["timezone"]=>
  string(13) "Europe/London"
}
 [2009-09-08 07:34 UTC] grodny at oneclick dot sk 
Such inconsistency and non-determinism in simple DateTime instance creation without using format modifier(undocumented one) can't be called correct. It's just how it was done :)
Thanks anyway for hint.
 [2009-09-08 09:09 UTC] derick@php.net 
Let's keep it open though, so that it can be documented.
 [2009-09-12 09:09 UTC] svn@php.net 
Automatic comment from SVN on behalf of torben
Revision: http://svn.php.net/viewvc/?view=revision&revision=288278
Log: Document how to cause unspecified portions of the time given to
createFromFormat() to be initialized to zero.
Addresses bug #49480.
 [2009-09-12 09:09 UTC] torben@php.net 
This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.
 
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