Using the following update sites:
Eclipse 4.2.0 Juno installs PDT 3.0.1.
The nightly developer builds, currently 3.1.1, can be installed through the update site:
How can I install the stable version of PDT 3.1.0?
It's very possible that you can't.
Go to Help->Install new software and there put this url :
Now in search for php and select those packets , push over next button and finalice the install. After that reset Eclipse-Ide and you will have the php plugin :)
Yes you can. Choose PDT from the following link. http://download.eclipse.org/releases/indigo/
来源：https://stackoverflow.com/questions/12182255/how-to-install-eclipse-pdt-3-1-in-eclipse-juno