Bug #49958 [NoF->Fbk]: mb_strtoupper fails on Japanese characters

From: Date: Sun, 25 Apr 2010 18:48:43 +0000
Subject: Bug #49958 [NoF->Fbk]: mb_strtoupper fails on Japanese characters
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-149900@lists.php.net to get a copy of this message
Edit report at http://bugs.php.net/bug.php?id=49958&edit=1

 ID:               49958
 Updated by:       felipe@php.net
 Reported by:      mjong at magnafacta dot nl
 Summary:          mb_strtoupper fails on Japanese characters
-Status:           No Feedback
+Status:           Feedback
 Type:             Bug
 Package:          mbstring related
 Operating System: Windows Vista
 PHP Version:      5.2.11
-Assigned To:      
+Assigned To:      moriyoshi

 New Comment:

Please try using this snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/




Previous Comments:
------------------------------------------------------------------------
[2009-11-03 01:00:00] php-bugs at lists dot php dot net

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

------------------------------------------------------------------------
[2009-10-26 11:09:58] jani@php.net

Ever heard of http://www.pastebin.com/ ?

------------------------------------------------------------------------
[2009-10-26 10:12:51] mjong at magnafacta dot nl

mbstring.func_overload = 0. Setting it to 2 or 7 just means there is 
no difference between calling sttrtoupper() and mb_strtoupper(), but 
ucfirst() still produces incorrectly coded strings. This is using UTF-
8 for internal encoding. Using UTF-16 and UTF-32 basically crashes the 
program. 

mbstring.strict_detection = Off. Setting it to On does have no effect 
whatsoever. I.e. if I check with phpinfo() it stays off, no matter 
what I specify as value. This is not the case with other php.ini 
settings. Besides there is no documentation on its effect.

I really researched this problem - but cannot not show you because 
then this form says I am spammming - but the crux of this problem is 
that UTF-8, UTF-16 and UTF-32 each behave differently when used with 
strtoupper() and mb_strtoupper() and all can result in string that are 
not valid encodings.

I have a working solution for my case, but I think this is a solvable 
bug.

------------------------------------------------------------------------
[2009-10-26 08:46:12] jani@php.net

Please read this page and especially the last two examples:
http://www.php.net/manual/en/mbstring.configuration.php


Are you using the proper options?

------------------------------------------------------------------------
[2009-10-25 14:41:10] mjong at magnafacta dot nl

[PLEASE ALLOW LONGER ENTRIES] 

Using strtoupper() all encodings create nonsense strings, but in half 
the cases the error can be tested using mb_check_encoding(). 
Strangely enough the 2-byte definitions including UTF-8 cannot be 
checked, while UTF-8 and the 4-byte encodings do OK.

Using mb_strtoupper() a third of the encodings do a proper 
translation. Half of the encodings generate nonsense and none of them 
can be tested using mb_check_encoding(). The rest of the encodings 
fail when using them with mb_strtoupper(). 
With mb_strtoupper() UTF-8 and UTF-16 work OK, but now UTF-32 fails. 
"Stranger and stranger", Alice said.

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


The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at

    http://bugs.php.net/bug.php?id=49958


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