Eclipse on Windows 7 - Add PHP Support greyed out

I have Eclipse running on Windows 7, and am trying to work out how to get PHP support in my projects. Highlighting and intellisense seems to be working quite alright, but when I right-click my project and go to "Configure", the opti开发者_运维问答on "Add PHP Support" is grayed out.

Would anyone know how I could get that to be enabled, please?

Thanks in advance!

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Are you sure that's what you want to do? I just tested in my Eclipse install, and everything that is already a PHP project has that option greyed out. The only project I can choose that option on is a Java project.

If you create a project by File -> New -> PHP Project then you don't need to do anything else to enable PHP support.