The vim editor is awesome, but all this 'bolt on a bunch of stuff to make vim more like an IDE' is misguided imo. If you use Java, use eclim for a vim-like experience in Eclipse; if you use Visual Studio, use viemu.

(that said, I still wrote a vim plugin to display the php manual function declaration in the status bar when you have your cursor nead the name of a vim function... but just because there is no 'real' IDE for php though)