# Coding standards

farmOS follows [Drupal coding standards](https://www.drupal.org/docs/develop/standards).

The farmOS development Docker image comes pre-installed with
[PHP CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer) for detecting
code standard violations, and [PHPStan](https://phpstan.org) for static
analysis. All farmOS code must pass both.

The following command will run PHP CodeSniffer on all farmOS code:

    docker exec -it -u www-data farmos_www_1 phpcs /opt/drupal/web/profiles/farm

If you see no output, then there are no issues.

In some cases, code standard violations can be fixed automatically with
`phpcbf`:

    docker exec -it -u www-data farmos_www_1 phpcbf /opt/drupal/web/profiles/farm

The following command will run PHPStan on all farmOS code:

    docker exec -it -u www-data farmos_www_1 phpstan analyze /opt/drupal/web/profiles/farm