A set of Magento specific PHP CodeSniffer rules.

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33 2023-12-19 17:16 UTC

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Last update: 2024-05-22 18:46:04 UTC


A set of Magento rules for PHP_CodeSniffer tool.

Installation within a Magento 2 site

To use within your Magento 2 project you can use:

composer require --dev magento/magento-coding-standard

Due to security, when installed this way the Magento standard for phpcs cannot be added automatically. You can achieve this by adding the following to your project's composer.json:

"scripts": {
    "post-install-cmd": [
      "([ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/)"
    "post-update-cmd": [
      "([ $COMPOSER_DEV_MODE -eq 0 ] || vendor/bin/phpcs --config-set installed_paths ../../magento/magento-coding-standard/)"

Installation for development

You can install Magento Coding Standard by cloning this GitHub repo:

git clone
cd magento-coding-standard
composer install

It is possible also to install a standalone application via Composer

composer create-project magento/magento-coding-standard --stability=dev magento-coding-standard

Verify installation

Command should return the list of installed coding standards including Magento2.

vendor/bin/phpcs -i


Once installed, you can run phpcs from the command-line to analyze your code MyAwesomeExtension

vendor/bin/phpcs --standard=Magento2 app/code/MyAwesomeExtension

Fixing issues automatically

Also, you can run phpcbf from the command-line to fix your code MyAwesomeExtension for warnings like "PHPCBF CAN FIX THE [0-9]+ MARKED SNIFF VIOLATIONS AUTOMATICALLY"

vendor/bin/phpcbf --standard=Magento2 app/code/MyAwesomeExtension


See the community contribution model.

Where to contribute

  • Documentation of existing rules. See ExtDN PHP CodeSniffer rules for Magento 2 as a good example.
  • Bug fixes and improvements of existing rules.
  • Creation of new PHP CodeSniffer rules.
  • Discussions on new rules (through periodic hangouts or discussions per GitHub issue).

How to contribute

  1. Start with looking into Community Dashboard. Any ticket in Up for grabs is a good candidate to start.
  2. Didn't satisfy your requirements? Create one of three types of issues:
    • Bug report - Found a bug in the code? Let us know!
    • Existing rule enhancement - Know how to improve existing rules? Open an issue describe how to enhance Magento Coding Standard.
    • New rule proposal - Know how to improve Magento ecosystem code quality? Do not hesitate to open a proposal.
  3. The issue will appear in the Backlog column of the Community Dashboard. Once it will be discussed and get accepted label the issue will appear in the Up for grabs column.


All rules should be covered by unit tests. Each Test.php class should be accompanied by a file to allow for unit testing based upon the PHP_CodeSniffer parent class AbstractSniffUnitTest. You can verify your code by running


Also, verify that the sniffer code itself is written according to the Magento Coding Standard:

vendor/bin/phpcs --standard=Magento2 Magento2/ --extensions=php


Prerequisites: Node.js (^12.22.0, ^14.17.0, or >=16.0.0).

You need to run the following command to install all the necessary packages described in the package.json file:

npm install

You can execute ESLint as follows:

npm run eslint -- path/to/analyze


From magento-coding-standard project, you can execute rector php as follows:

vendor/bin/rector process Magento2 Magento2Framework PHP_CodeSniffer --dry-run --autoload-file vendor/squizlabs/php_codesniffer/autoload.php

The rules from rector that are applied are set inside the config file: rector.php

The option --dry-run displays errors found, but code is not automatically fixed.

To run rector for magento projects you need to:

  • Specify the magento path and the autoload file for the magento project:
vendor/bin/rector process MAGENTO_PATH --dry-run --autoload-file MAGENTO_AUTOLOAD_FILE


vendor/bin/rector process magento2ce/app/code/Magento/Cms/Model --dry-run --autoload-file magento2ce/vendor/autoload.php


Each Magento source file included in this distribution is licensed under the OSL-3.0 license.

Please see LICENSE.txt for the full text of the Open Software License v. 3.0 (OSL-3.0).