Acquia Coding Standards for PHP

Acquia Coding Standards for PHP is a collection of PHP_CodeSniffer rules (sniffs) for Acquia coding standards for PHP projects, including Drupal extensions.

Rules

Acquia Coding Standards for PHP includes a selection of sniffs from the following rulesets:

Drupal Code Sniffer encapsulates Drupal coding standards and best practices for module development.
PHP_CodeSniffer itself contains several broadly applicable rulesets.
PHPCompatibility checks for PHP cross-version compatibility with all supported language versions.
phpcs-security-audit finds vulnerabilities and weaknesses related to security in PHP code.

Rulesets

Rules are split into rulesets according to the project language and framework:

AcquiaPHP contains sniffs applicable to all PHP projects.
AcquiaDrupalStrict incorporates AcquiaPHP and adds all Drupal coding standards and best practices sniffs. It is recommended for new Drupal projects and teams familiar with Drupal coding standards.
AcquiaDrupalTransitional provides a relaxed standard for legacy Drupal codebases or teams new to Drupal coding standards. It incorporates AcquiaPHP and adds a more or less straight copy of Drupal core's own phpcs configuration, making it sufficient for core contribution.

Installation & usage

Add Acquia Coding Standards for PHP to your project via Composer:
```
composer require --dev acquia/coding-standards
```

Inform PHP CodeSniffer of the location of the standard and its dependencies:

It is strongly recommended that you use a Composer plugin to handle this for you, e.g., DealerDirect/phpcodesniffer-composer-installer:

composer config extra.phpcodesniffer-search-depth 4

# Change the newly-set value to a number, since `composer config` always creates strings.
# @see https://github.com/composer/composer/issues/8195
# @see https://github.com/Dealerdirect/phpcodesniffer-composer-installer/issues/82
sed -i'.bak' 's|"phpcodesniffer-search-depth": "4"|"phpcodesniffer-search-depth": 4|' composer.json && rm composer.json.bak

composer require --dev dealerdirect/phpcodesniffer-composer-installer

Alternatively, add a script to your composer.json to handle it:

{
    "scripts": {
        "post-install-cmd": "@install-coding-standards",
        "post-update-cmd" : "@install-coding-standards",
        "install-coding-standards": "\"vendor/bin/phpcs\" --config-set installed_paths vendor/acquia/coding-standards/src,vendor/drupal/coder/coder_sniffer,vendor/pheromone/phpcs-security-audit,vendor/phpcompatibility/php-compatibility"
    }
}

Check code for standards compliance:

./vendor/bin/phpcs --standard=AcquiaDrupalStrict path/to/code

Automatically fix any standards violations possible:

./vendor/bin/phpcbf --standard=AcquiaDrupalStrict path/to/code

Optionally create a default configuration file for your project so you don't have to provide the command-line arguments every time (i.e., below). Here's a working example: example/phpcs.xml.dist.
```
./vendor/bin/phpcs
```
Optionally add code checking to your Git pre-commit hook to prevent committing code with violations. Since client-side Git hooks are not copied when a repository is cloned, you might like to use an automated solution like BrainMaestro/composer-git-hooks to manage them, for example: example/composer.json.

Contribution

Contributions are welcome! See CONTRIBUTING.md.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.