How to Check Magento 2 Coding Standards Using Code Sniffer

Introduction

Magento 2 is a powerful and widely used e-commerce platform that enables businesses to create robust online stores. As a Magento 2 developer, maintaining high coding standards is crucial to ensure the longevity, scalability, and maintainability of your projects. Fortunately, there are tools available to help you achieve this goal. One such tool is "PHP Code Sniffer," which allows you to check your code against Magento 2 coding standards and identify any potential issues. In this blog, we will guide you through the process of using Code Sniffer to validate your Magento 2 code and ensure it meets the recommended coding standards.

Installing PHP Code Sniffer

Before we dive into checking Magento 2 coding standards, you need to have PHP Code Sniffer installed on your system. Follow these steps to get it up and running:

Step 1: Open your terminal or command prompt.

Step 2: Install PHP Code Sniffer using Composer by running the following command:

javascript

composer global require "squizlabs/php_codesniffer=*"

Step 3: Once the installation is complete, verify that PHP Code Sniffer is installed correctly by running:

css

phpcs --version

Downloading the Magento Coding Standards

Magento provides a set of coding standards specifically tailored for Magento 2 projects. You can download and install these standards as a separate package for Code Sniffer:

Step 1: Open your terminal or command prompt.

Step 2: Install Magento 2 coding standards using Composer:

javascript

composer global require magento/magento-coding-standard

Step 3: After the installation is successful, verify that Magento 2 coding standards are available by running:

css

phpcs -i

Running Code Sniffer with Magento Coding Standards

Now that we have both PHP Code Sniffer and Magento 2 coding standards installed, let's see how to check our Magento 2 code against these standards:

Step 1: Navigate to the root directory of your Magento 2 project in the terminal.

Step 2: Run PHP Code Sniffer using the Magento 2 coding standards:

bash

phpcs --standard=Magento2 /path/to/your/magento2/project

Replace /path/to/your/magento2/project with the actual path to your Magento 2 project's root directory.

Understanding Code Sniffer Results

Once Code Sniffer finishes analyzing your code, it will display a list of issues (if any) along with their respective line numbers and descriptions. Each issue will also be assigned a severity level, indicating the importance of addressing it.

The severity levels are as follows:

ERROR: The code does not meet the coding standard and must be fixed immediately.

WARNING: The code might work, but it is not following the recommended standard and should be reviewed.

IGNORE: Code Sniffer will skip these issues.

Fixing Code Sniffer Issues

After running Code Sniffer, you will likely encounter several issues that need attention. Here are some common coding standards violations and how to address them:

Use of short tags (<?) is discouraged. Replace them with full PHP opening tags (<?php).

Ensure all files end with a single empty line to meet the standard requirement.

Maintain proper indentation and spacing for readability.

Avoid using var_dump and print_r in production code; use logging instead.

Follow proper naming conventions for variables, functions, and classes.

Pay attention to unused variables or methods and remove them if not needed.

Integrating Code Sniffer into Your Development Workflow

To ensure your team adheres to Magento 2 coding standards consistently, consider integrating Code Sniffer into your version control workflow. You can configure pre-commit hooks or continuous integration tools to automatically run Code Sniffer before code is committed or deployed to production.

Conclusion

Maintaining consistent and high coding standards is essential for the success of any Magento 2 project. By using PHP Code Sniffer with Magento 2 coding standards, you can easily identify and address coding issues, resulting in more robust, secure, and maintainable code. Embrace these tools and best practices to elevate the quality of your Magento 2 development and deliver outstanding e-commerce experiences for your clients and customers. Happy coding!

Reference

https://magentoexpertforum.com/showthread.php/35033-How-to-Check-Magento-2-Coding-Standards-Using-Code-Sniffer

https://meetanshiblog.quora.com/How-to-Check-Magento-2-Coding-Standards-Using-Code-Sniffer

https://www.reddit.com/user/priyasadrani/comments/152sx2o/how_to_check_magento_2_coding_standards_using/

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https://viesearch.com/1y4rs/how-to-check-magento-2-coding-standards-using-code-sniffer-

https://list.ly/i/8928240

https://www.patreon.com/posts/how-to-check-2-86272068

https://steemit.com/magento2/@priyasadrani/how-to-check-magento-2-coding-standards-using-code-sniffer

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