[prev in list] [next in list] [prev in thread] [next in thread] 

List:       php-doc-bugs
Subject:    [DOC-BUGS] Bug #64908 [Nab->Asn]: DateTime's constructor accepts time that not exists because of DST
From:       aharvey () php ! net
Date:       2013-05-23 18:31:26
Message-ID: E1UfaIQ-0000f0-BH () sgrv2 ! php ! net
[Download RAW message or body]

Edit report at https://bugs.php.net/bug.php?id=64908&edit=1

 ID:                 64908
 Updated by:         aharvey@php.net
 Reported by:        istvan dot dani at gmail dot com
 Summary:            DateTime's constructor accepts time that not exists
                     because of DST
-Status:             Not a bug
+Status:             Assigned
 Type:               Bug
 Package:            Documentation problem
 Operating System:   OS X 10.8
 PHP Version:        Irrelevant
-Assigned To:        
+Assigned To:        aharvey
 Block user comment: N
 Private report:     N

 New Comment:

Reopening.


Previous Comments:
------------------------------------------------------------------------
[2013-05-23 18:29:41] derick@php.net

That's wrong, it should say "invalid date *format*". Marking this as a doc issue.

------------------------------------------------------------------------
[2013-05-23 18:17:46] istvan dot dani at gmail dot com

Yep. Manual at http://hu1.php.net/manual/en/datetime.construct.php says:
"If an invalid date is specified, then an exception is now thrown. Previously an 
error was emitted."

------------------------------------------------------------------------
[2013-05-23 17:22:23] derick@php.net

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

PHP's date time handling auto-corrects wrong date/time values. This is similar to doing:

<?php
$n = new DateTime("2013-04-31");
var_dump( $n );
?>

class DateTime#1 (3) {
  public $date =>
  string(19) "2013-05-01 00:00:00"
  public $timezone_type =>
  int(3)
  public $timezone =>
  string(13) "Europe/London"
}

------------------------------------------------------------------------
[2013-05-23 08:30:06] istvan dot dani at gmail dot com

Description:
------------
Europe/Budapest timezone offset is +1, and +2 in DST.
Transition to DST is at 2013-03-31 01:00:00 UTC/GMT.
According to this, locale time should not exists between 02:00:00 and 03:00:00,
and must not be accepted as valid time.

Test script:
---------------
try {
   $wrong_date = new DateTime("2013-03-31 02:30:00", new DateTimeZone("Europe/Budapest"));
} catch (Exception $e) {
   echo $e->getMessage();
}
print "Wrong date in local timezone: " . $wrong_date->format("Y-m-d H:i:s");
$wrong_date->setTimezone(new DateTimeZone("UTC"));
print "<br />Converting to UTC: " . $wrong_date->format("Y-m-d H:i:s");
$wrong_date->setTimezone(new DateTimeZone("Europe/Budapest"));
print "<br />Converting back to locale timezone: " . $wrong_date->format("Y-m-d H:i:s");


Expected result:
----------------
Get an exception.

Actual result:
--------------
Wrong date in local timezone: 2013-03-31 02:30:00
Converting to UTC: 2013-03-31 01:30:00
Converting back to locale timezone: 2013-03-31 03:30:00


------------------------------------------------------------------------



-- 
Edit this bug report at https://bugs.php.net/bug.php?id=64908&edit=1

-- 
PHP Documentation Bugs Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

[prev in list] [next in list] [prev in thread] [next in thread]