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CONTRIBUTING.md

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Contributions Are Welcome!

If you need any help, don't hesitate to ask the community on Gitter.

Quick Guide

Fixer

A fixer is a class that tries to fix one code style issue (a Fixer class must implement FixerInterface).

Config

A config knows about the code style rules and the files and directories that must be scanned by the tool when run in the directory of your project. It is useful for projects that follow a well-known directory structures (like for Symfony projects for instance).

How-To

  • Fork the repo.
  • Checkout the branch you want to make changes on:
    • If you are fixing a bug or typo, improving tests or for any small tweak: the lowest branch where the changes can be applied. Once your Pull Request is accepted, the changes will get merged up to highest branches.
    • master in other cases (new feature, deprecation, or backwards compatibility breaking changes). Note that most of the time, master represents the next minor release of PHP CS Fixer, so Pull Requests that break backwards compatibility might be postponed.
  • Install dependencies: composer install.
  • Create a new branch, e.g. feature-foo or bugfix-bar.
  • Make changes.
  • If you are adding functionality or fixing a bug - add a test! Prefer adding new test cases over modifying existing ones.
  • Make sure there is no wrong file permissions in the repository: ./dev-tools/check_file_permissions.sh.
  • Make sure there is no trailing spaces in the code: ./dev-tools/check_trailing_spaces.sh.
  • Update documentation: php dev-tools/doc.php. This requires the highest version of PHP supported by PHP CS Fixer. If it is not installed on your system, you can run it in a Docker container instead: docker run -it --rm --user="$(id -u):$(id -g)" -w="/app" --volume="$(pwd):/app" php:7.4-cli php dev-tools/doc.php.
  • Install dev tools: dev-tools/install.sh
  • Run static analysis using PHPStan: php -d memory_limit=256M dev-tools/vendor/bin/phpstan analyse
  • Check if tests pass: vendor/bin/phpunit.
  • Fix project itself: php php-cs-fixer fix.

Working With Docker

This project provides a Docker setup that allows working on it using any of the supported PHP versions.

To use it, you first need to install:

Make sure the versions installed support Compose file format 3.8.

Next, copy docker-compose.override.yaml.dist to docker-compose.override.yaml and edit it to your needs. The relevant parameters that might require some tweaking have comments to help you.

You can then build the images:

docker-compose build --parallel

Now you can run commands needed to work on the project. For example, say you want to run PHPUnit tests on PHP 7.4:

docker-compose run php-7.4 vendor/bin/phpunit

Sometimes it can be more convenient to have a shell inside the container:

docker-compose run php-7.4 sh
/app vendor/bin/phpunit

The images come with an xdebug script that allows running any PHP command with Xdebug enabled to help debug problems.

docker-compose run php-7.4 xdebug vendor/bin/phpunit

If you're using PhpStorm, you need to create a server with a name that matches the PHP_IDE_CONFIG environment variable defined in the Docker Compose configuration files, which is php-cs-fixer by default.

All images use port 9003 for debug connections.

Opening a Pull Request

You can do some things to increase the chance that your Pull Request is accepted the first time:

  • Submit one Pull Request per fix or feature.
  • If your changes are not up to date, rebase your branch onto the parent branch.
  • Follow the conventions used in the project.
  • Remember about tests and documentation.
  • Don't bump version.

Making New Fixers

There is a cookbook with basic instructions on how to build a new fixer. Consider reading it before opening a PR.

Project's Standards