Anything but that...
I'll take my Java and my PHP separately, please. Java is OK for the enterprise, but it sucks for smaller, "quick and dirty" projects on a tight budget. PHP is great for smaller projects but sucks for enterprise. Putting the two together is like turning my hammer into a screwdriver.
Personally, I enjoy doing a bit of Java at work and coming home to a loving PHP box in the evening...The mistress isn't as fun when she's the wife.
Since Zend Studio was already written in Java and slower than molasses in the North Pole, its users will undoubtably feel comfortable moving to the slower than tree sap in the North Pole Eclipse platform. But for the rest of us that don't want to take coffee breaks while eclipse builds our workspaces, lets hope the really great PHP tools (Komodo, Maguma et al) will stay on top.