I often find it necessary to compare two different files that are not part of a repository like svn. For instance sometimes i need to compare the development version with the version currently in production or maybe just two completely unrelated files.
Turns out this is not only possible but very easy to do with Eclipse, Zend Studio or any other Eclipse based IDE.
To compare two files in Eclipse, select both files (Control click them) and in the contextual menu (right button), chose Compare With > Each Other.
Thats it! Enjoy!