I have one page and it\'s encoding is UTF-8 and If i try to run that code in unix system everythings looks fine but when i try to run in windows(7) some chracters looks question
For those who is having similar problems on linux (this may work also for windows but not sure).
Yes there is 'turkish' but there is also 'tr_TR.utf8' . If you use 'tr_TR.utf8' most probably your problems will be washed away. Same thing applies also to 'greek'. Instead use 'el_GR.utf8'
On linux you can check the locale list to find the proper settings for your site.
locale -a
List is too long and you can't see all languages, so either you can just dump it into a file and then open the file to check.
locale -a > locale.txt
vi locale.txt
or do locale -a | grep languagecode for a specific language
locale -a | grep tr