woocommerce-backend-dev

Original：🇺🇸 English

Translated

Add or modify WooCommerce backend PHP code following project conventions. Use when creating new classes, methods, hooks, or modifying existing backend code. **MUST be invoked before writing any PHP unit tests.**

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Sourcewoocommerce/woocommerce

Added on2026-02-10

NPX Install

npx skill4agent add woocommerce/woocommerce woocommerce-backend-dev

SKILL.md Content

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WooCommerce Backend Development

This skill provides guidance for developing WooCommerce backend PHP code according to project standards and conventions.

When to Use This Skill

ALWAYS invoke this skill before:

Writing new PHP unit tests (
```
*Test.php
```
files)
Creating new PHP classes
Modifying existing backend PHP code
Adding hooks or filters

Instructions

Follow WooCommerce project conventions when adding or modifying backend PHP code:

Creating new code structures: See file-entities.md for conventions on creating classes and organizing files (but for new unit test files see unit-tests.md).
Naming conventions: See code-entities.md for naming methods, variables, and parameters
Coding style: See coding-conventions.md for general coding standards and best practices
Type annotations: See type-annotations.md for PHPStan-aware PHPDoc annotations
Working with hooks: See hooks.md for hook callback conventions and documentation
Dependency injection: See dependency-injection.md for DI container usage
Data integrity: See data-integrity.md for ensuring data integrity when performing CRUD operations
Writing tests: See unit-tests.md for unit testing conventions

Key Principles

Always follow WordPress Coding Standards
Use class methods instead of standalone functions
Place new internal classes in
```
src/Internal/
```
by default
Use PSR-4 autoloading with
```
Automattic\WooCommerce
```
namespace
Write comprehensive unit tests for new functionality
Run linting and tests before committing changes

Version Information

To determine the next WooCommerce version number for

@since

annotations:

Read the
```
$version
```
property in
```
includes/class-woocommerce.php
```
on the trunk branch
Remove the
```
-dev
```
suffix if present
Example: If trunk shows
```
10.4.0-dev
```
, use
```
@since 10.4.0
```
Note: When reviewing PRs against trunk, the version in trunk is correct even if it seems "future" relative to released versions