ID: 40568
Updated by: helly@php.net
Reported By: JPlissonneauDuquene at bellhelicopter dot textr
Status: Open
Bug Type: Filesystem function related
Operating System: Windows XP
PHP Version: 5.2.1
New Comment:
They should fix the design then. And not wrongly implement stuff and
make everybody follow their errors.
Previous Comments:
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[2007-02-20 22:28:59] JPlissonneauDuquene at bellhelicopter dot textr
Description:
------------
Hi,
PHP filemtime/fileatime/filectime (and maybe stat itself) functions
should use GetFileTime() Win32API (or GetFileAttributesEx()), not
stat() to retrieve the actual times from files. Otherwise the returned
time is shifted by one hour in some conditions.
This (mis)behaviour is actually DOCUMENTED by Microsoft, so it does not
qualify for "bogus - fix microsoft libraries" bug rejection -- Microsoft
already fixed their documentation and even indicated that "This behavior
is by design."
References:
http://support.microsoft.com/kb/158588http://support.microsoft.com/kb/190315http://msdn2.microsoft.com/en-gb/library/ms724290.aspxhttp://us3.php.net/manual/en/function.stat.php#58404http://www.codeproject.com/datetime/dstbugs.asp
Thanks!
Reproduce code:
---------------
<?php
print date(DATE_ISO8601) . ' ' . time() . "\r\n";
$summer_date = gmmktime(12,34,56,06,21,2006);
$winter_date = gmmktime(12,34,56,12,21,2006);
if (!file_exists("summer_file")) touch("summer_file", $summer_date);
if (!file_exists("winter_file")) touch("winter_file", $winter_date);
print "summer_file " . $summer_date . ' ' . filemtime("summer_file") .
"\r\n";
print "winter_file " . $winter_date . ' ' . filemtime("winter_file") .
"\r\n";
?>
Expected result:
----------------
D:\test>php test.php
2007-02-20T15:14:45-0500 1172002485
summer_file 1150893296 1150893296
winter_file 1166704496 1166704496
D:\test>dir
06/21/2006 08:34 AM 0 summer_file
12/21/2006 07:34 AM 0 winter_file
Actual result:
--------------
# NOTE - run tests in order. Test 1 will create the files.
# Do NOT remove the files before tests 2-4.
# test 1. Winter time, DST adj. checked
D:\test>php test.php
2007-02-20T17:07:47-0500 1172009267
summer_file 1150893296 1150893296
winter_file 1166704496 1166704496
# test 2. Winter time, DST adj. unchecked
D:\test>php test.php
2007-02-20T17:08:05-0500 1172009285
summer_file 1150893296 1150896896
winter_file 1166704496 1166704496
# note summer_file timestamp is now 1 hour later
# test 3. Summer time, DST adj. unchecked
D:\test>php test.php
2007-08-20T18:08:34-0400 1187647714
summer_file 1150893296 1150896896
winter_file 1166704496 1166704496
# same as test 2.
# note that time /t or GUI clock will show 17:08, while
# PHP time reports 18:08, but this is another bug.
# test 4. Summer time, DST adj. now checked
D:\test>php test.php
2007-08-20T18:11:04-0400 1187647864
summer_file 1150893296 1150896896
winter_file 1166704496 1166708096
# note that winter_file timestamp is now 1 hour later
# time /t and GUI clock jumped 1 hour later (18:11) when
# checking automatic DST adj.
D:\test>dir *_file
# after test1
06/21/2006 08:34 AM 0 summer_file
12/21/2006 07:34 AM 0 winter_file
# after test2
06/21/2006 08:34 AM 0 summer_file
12/21/2006 07:34 AM 0 winter_file
# after test3
06/21/2006 08:34 AM 0 summer_file
12/21/2006 07:34 AM 0 winter_file
# after test4
06/21/2006 09:34 AM 0 summer_file
12/21/2006 08:34 AM 0 winter_file
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Edit this bug report at http://bugs.php.net/?id=40568&edit=1