Dear David, Thank you very much for your reply . Honestly I don't know how the data is stored in the db. but for sure it's NOT unicode . I discovered that if the data is stored in unicode , everything is ok.
the database is mysql , and i access it through phpMyAdmin. but i am still have 2 problems : first : how to convert all previous records into unicode ??
second : if the data stored in unicode , it's nor readable through phpMyAdmin , and i can't browse it or edit records through it.
Thanks you very very much again , and i wish you have any idea