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