Netbeans PHP语法在模板文件中突出显示

I'm using netbeans 7.4 for my PHP web application which is based on Savant3 templating system.

However, when I put PHP code inside .tpl file, it is not considered as inline PHP code. It displays error saying "Unexpected character(s) ? found Unexpected token LESS found" wherever I put PHP opening tag (). And in meantime, it does not highlight the PHP code inside html attribute. Both these errors are highlighted in my uploaded image.

How can I resolve this? Thanks!

Go to Tools -> Options -> Miscellaneous -> Files

In the File Extension dropdown choose tpl

In the Associate File Type (MIME) dropdown choose text/x-php5