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I made a tutorial to explain how to install aptana studio 3 as a plugin in eclipse PDT the eclipse version de develop PHP.
I did the first version of the tutorial few month ago when I was trying to get working aptana in eclipse PDT. With all the parameters to set and all the parts to get working together it took me more than a week to get it working, specially because of bugs with xampp 1.7.4 and xdebug working in windows 7 64 bit. But now it's working and I modify the tutorial to explain how to install the version 3 of the aptana plugin in eclipse PDT. It's here:
I hope its help. Any comment even for orthographic correction to improve the tutorial is welcome.