Three weeks ago PHPUnit 3.6 was released and it has a little new feature you might have missed until now. PHPUnit can now show you code coverage information on the command line.

Options for the report output include: colorizing, writing the output to a file, including a project summary, namespace separation and package (using the @package phpdoc tag) information. He includes a use case he's found for it - small projects where you can cover the whole codebase quickly (with a "watch" command example filtering based on a certain class).