Maintaining code quality on projects where there are many developers contributing is a tough assignment. How many times have you tried to contribute to an open-source project only to find the maintainer rejecting your pull request on the grounds of some invisible coding standard? [...] Luckily there are tools that can assist maintainers. In this post, I'll be going over how to use composer, git hooks, and phpcs to enforce code quality rules.
These three technologies are combined together to make a more seamless experience for the developer while keeping the code quality high. Their method makes use of the "scripts" (post-install-cmd) feature of Composer to, after the installation of all packages, set up a git hook script that will run the phpcs checks on pre-commit. It's a pretty simple shell script that kicks back any errors it might find before the user can commit their changes.