Edit report at http://bugs.php.net/bug.php?id=51557&edit=1
ID: 51557
Updated by: fel...@php.net
Reported by: a3297627 at owlpic dot com
Summary: timelib_timezone_lookup has invalid DST entries,
breaks strtotime
-Status: Open
+Status: Assigned
Type: Bug
Package: Date/time related
Operating System: Linux
PHP Version: 5.2.13
-Assigned To:
+Assigned To: derick
Previous Comments:
------------------------------------------------------------------------
[2010-04-15 06:19:30] a3297627 at owlpic dot com
Copy/paste error, the test output should read:
Expected result:
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 05:00:00 +0000
Converted: Thursday, Apr 15 12:00am EDT
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 12:00am EDT
Actual Result:
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 05:00:00 +0000
Converted: Thursday, Apr 15 1:00am EDT
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 12:00am EDT
------------------------------------------------------------------------
[2010-04-15 06:17:07] a3297627 at owlpic dot com
Description:
------------
It seems timezonemap.h was generated by a tzdata parser that
unfortunately did not include information on the years Daylight Saving
Time was in use. In particular, in South Korea, there is no DST, yet
there exists KST/KDT distinction in strtotime that thinks KDT is
currently active, with inconsistencies with other date/time functions.
Test script:
---------------
<?php
function tzconvert ($input, $timezone)
{
$ts = strtotime ($input);
$time = gmdate ('r', $ts);
$dt = new DateTime ($time);
$dt->setTimeZone (new DateTimeZone ($timezone));
echo "Input: $time\nConverted: " . $dt->format ('l, M d g:ia T')
. "\n";
}
tzconvert ("Thursday, April 15 2010 12:00am EDT", "KST");
tzconvert ("Thursday, April 15 2010 12:00am EDT", "KDT");
tzconvert ("Thursday, Apr 15 1:00pm KST", "EDT");
tzconvert ("Thursday, Apr 15 1:00pm KDT", "EDT");
?>
Expected result:
----------------
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 05:00:00 +0000
Converted: Thursday, Apr 15 1:00am EDT
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 12:00am EDT
Actual result:
--------------
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00pm KST
Input: Thu, 15 Apr 2010 05:00:00 +0000
Converted: Thursday, Apr 15 1:00am EDT
Input: Thu, 15 Apr 2010 04:00:00 +0000
Converted: Thursday, Apr 15 1:00am EDT
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=51557&edit=1
