I tried so much to find the solution for this problem, I think the problem on phpmyadmin itself. I set true collaction value "utf8_general_ci" and tried also "utf16_general_ci". configure mysql character system set also, but the problem is still.
FYI, when I retrieve the data from the table using php code the data would be on arabic and intact, but from phpmyadmin there was rubbish like :اسمه رقمه استاذ مساعØ"