Just wanted to share this little gem I found with the other Netbeans users out there:
It's a plugin for Netbeans that allows you to run Php_CodeSniffer from within Netbeans. I've been using it today with the DrupalCS standards library (http://drupal.org/project/drupalcs ) and it works pretty well. There's a couple little glitches, but it ends up catching about 99% of the stuff.
Also there's another version in development here:
However it is still in the alpha stage. Haven't tested it out yet.