Further reading
If you want to try out even more code quality tools, consider the following projects:
- Exakat (https://www.exakat.io) – A tool that also covers security issues and performance, for example. It can fix issues automatically, too.
- Phan (https://github.com/phan/phan) – A static code analyzer that you can try out immediately in your browser
- PHP Insights (https://phpinsights.com/) – Another analyzer, yet with easy-to-use metrics in terms of the code, architecture, complexity, and style