PHP doesn't work...

[Foziw]

Hello,

I installed Plesk some days ago but I'm trying to host php pages but it doesn't work.
I can't view any php page, html pages I can but not php.
I installed the latest version of PHP but nothing...dunno what to do.

When I try to view a php page I get a white page.

Do you know what's happening with my server?

Thanks in advance,
Foziw.