Problem in programming PHP with WML

I'm doing a project involving in WAP & WEB applications which complementary with Mysql database. However, when i try to compile the wml page, it goes error. The page is about combining the scripts of wml and php so as to access the database and returning the result to the client-sided. I don't know why....??....That comes out a Err Msg about "Unsupported type: text/html" ..... Is there anyone can help me please?? thx a lot