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Bug #65184 strftime() returns insufficient-length string under multibyte locales
Submitted: 2013-07-02 15:50 UTC Modified: 2013-07-03 20:55 UTC
From: k-yamashita at ver2 dot jp Assigned: ab (profile)
Status: Closed Package: Date/time related
PHP Version: 5.5.0 OS: Windows
Private report: No CVE-ID: None
View Developer Edit
 [2013-07-02 15:50 UTC] k-yamashita at ver2 dot jp 
Description:
------------
VC11's strftime() returns number of wide characters rather than bytes but PHP seems to rely on it to determine byte length.

http://connect.microsoft.com/VisualStudio/feedback/details/766205/vs2012-strftime-has-incorrect-return-value-in-vc-11-with-multibyte-codepages


Test script:
---------------
<?php
setlocale(LC_ALL, 'Japanese_Japan.932');
echo strftime('%A');


Expected result:
----------------
>php a.php | od -t x1
0000000 90 85 97 6a 93 fa
0000006

Above is Shift JIS encoded Japanese word for "Wednesday". Other week days are all 6 bytes long too.


Actual result:
--------------
>php a.php | od -t x1
0000000 90 85 97
0000003

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 [2013-07-03 07:32 UTC] ab@php.net
-Assigned To: +Assigned To: ab
 [2013-07-03 09:25 UTC] ab@php.net 
Automatic comment on behalf of ab
Revision: http://git.php.net/?p=php-src.git;a=commit;h=5324416b6514b6de53e7de269bc18b5807701051
Log: Fixed bug #65184 strftime() returns insufficient-length
 [2013-07-03 09:25 UTC] ab@php.net
-Status: Assigned +Status: Closed
 [2013-07-03 09:30 UTC] ab@php.net 
@k-yamashita please test the next snapshot.

Thanks.
 [2013-07-03 19:17 UTC] k-yamashita at ver2 dot jp 
It works fine. Thanks a lot!

Well, checking byte values will fail if unit test is performed on other than Wednesday. I suggest just checking the length.

--FILE--
<?php
	setlocale(LC_ALL, 'Japanese_Japan.932');
	echo strlen(strftime('%A')) . "\n";
?>
===DONE===
--EXPECT--
6
===DONE===
 [2013-07-03 20:55 UTC] ab@php.net 
Thanks for pointing to that. So lets do both, just pushed a fix passing an 
explicit timestamp.
 [2013-11-17 09:30 UTC] laruence@php.net 
Automatic comment on behalf of ab
Revision: http://git.php.net/?p=php-src.git;a=commit;h=5324416b6514b6de53e7de269bc18b5807701051
Log: Fixed bug #65184 strftime() returns insufficient-length
 [2014-01-02 13:52 UTC] ab@php.net 
Related To: Bug #65371
 
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