I was trying in my post before, in post benarkah itu jihat. On that post i write / paste arabic font.
How to do thats ?
You just change your kind of fonts in your blog database, by default font in WP_POST is latin1_swedish_ci.
Change the font in wp_post in your database from phpmyadmin to utf8_general_ci .
Now you can posting arabic font in your post.