I'd say that if your website is intented to be small, you can use PHP. The problem is that when your website starts to grow and you need to add more functionality to it, you end up having the html page full of php code, and this is very hard to maintain.
I'd go for
jsp + servlets + javabeans (Model II or Model View Controler). You achieve the separation of presentation logic and application, and the maintainability is much simpler than using php. If you develop your pages well, you'll have minimum of
java code in your .jsp files.
It depends of what you want as well... we need more info.
That's my opinion
cheers
)...