See Eclipse Plugin PHP Tool Integration (PTI) which provides integration of following features for Eclipse:
- PHP_CodeSniffer
- PHPUnit
- PHP Depend
- PHP Copy/Paste Detector
Update sites (Help – Install Software – Add …):
Latest stable release: http://www.phpsrc.org/eclipse/pti/
Development version: http://www.phpsrc.org/eclipse/pti-dev/