Hi Sourav ghosh, I am not found problem with your code and get result like your expect. Please see http://bugs.php.net/bug.php?id=35711&edit=1, seems you have mbstring extension server problem. I am use Apache/2.2.6 (Win32) mod_ssl/2.2.6 OpenSSL/0.9.8g PHP/5.2.5 on my esting server. Regards, Fajar Dhumadi --- In php-objects@xxxxxxxxxxxxxxx, sourav ghosh <sghosh246@...> wrote: > > Hi, > when I am executing the script it's not giving desired result. > <? > $str1 ='Kühn'; > $str2 = str_replace('ü','ü',$str1); > echo $str2; > ?> > Current Output : Kühn > Expected Output : Kühn > > Please provide solution urgently. > > > [Non-text portions of this message have been removed] >