Install PHP plugin for Eclipse (PHPEclipse)

Start Eclipse
Help > Install New Software...
Work with: http://phpeclipse.sourceforge.net/update/stable/1.2.x/
Add..
OK
check "PHPEclipse Stable Builds"
Next >
Next >
I accept the terms of the license agreements
Finish

Security Warning: OK
Software Updates: YES

# Links
https://help.ubuntu.com/community/PHPEclipse