In a new post to his blog Klaus Graefensteiner takes a look at a quick way you can enforce your set of coding standards right inside of the Eclipse IDE with the PDT extension installed. It's not the easiest thing to do, but if you have a well-defined coding standard and know you'll be enforcing it strongly, this might be the way to go.
I recently came across a nice collection of coding standards that the developers at Gallery2.org are using. I especially liked the summary of settings for Eclipse PDT. I applied them to my Eclipse PDT development environment, took some screenshots and put this article together for my personal reference:
Settings he changes include some of the general editor settings (like tab width and margins) as well as PHP and source control specific settings to remove extensions the IDE doesn't need to worry about. He also mentions the "Code Templates" feature that allow you to get more specific and define the standards at the code level, not just the editor.