[PHP-BUG] Bug #54315 [NEW]: Some string functions doesn't work as expected with cyrillic characters

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From:             
Operating system: Windows 7
PHP version:      5.3.6
Package:          Strings related
Bug Type:         Bug
Bug description:Some string functions doesn't work as expected with cyrillic 
characters

Description:
------------
At least two string functions fail with cyrillic characters (cp1251) as of
version 5.3.6:

strtolower() and strtoupper().

Test script:
---------------
setlocale(LC_ALL, 'ru_RU');

echo 'strtoupper: '.strtoupper('test тест').'<br>strtolower:
'.strtolower('TEST ТЕСТ');

Expected result:
----------------
strtoupper: TEST ТЕСТ

strtolower: test тест

Actual result:
--------------
strtoupper: TEST тест

strtolower: test ТЕСТ

-- 
Edit bug report at http://bugs.php.net/bug.php?id=54315&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=54315&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=54315&r=trysnapshot53
Try a snapshot (trunk):              
http://bugs.php.net/fix.php?id=54315&r=trysnapshottrunk
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=54315&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=54315&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=54315&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=54315&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=54315&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=54315&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=54315&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=54315&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=54315&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=54315&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=54315&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=54315&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=54315&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=54315&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=54315&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=54315&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=54315&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=54315&r=mysqlcfg