year ago i programmed a site. database is mysql i set charset utf8_general_ci. My page charset is utf8. when i inserting "Çevre ve Ye_illendirme" text to database via form. In database i see like that "Ã!evre ve YeÅxillendirme " but i want to see it "Çevre ve Ye_illendirme" now i found that i have to set my charset utf8_turkish_ci. But i have a lot of data in database how can i convert all data correctly.