coding-standard

ECS runs PHP-CS-Fixer and PHP_CodeSniffer as a single, parallel fast tool with zero dependencies. Run on PHP 7.2+

Slevomat Coding Standard for PHP_CodeSniffer provides many useful sniffs

[DEPRECATED] Object Calisthenics rules for PHP_CodeSniffer

Development repository for the Symfony coding standard

[Deprecated] Use ECS that includes this set with more new rules

Magento Coding Standard

The coding standard of the Doctrine project.

A coding standards for enterprise system

Nette Coding Standard code checker & fixer

phpMyAdmin PHP CodeSniffer Coding Standard

MO4 Coding Standard Rules for Codesniffer based on Symfony Coding Standards.

PHP coding standard used in Alma Career projects, but usable anywhere else

Webimpress Coding Standard for PHP_CodeSniffer

Enforcement kits for BARR-C, Barr Group's Embedded C Coding Standard: clang-format, clang-tidy, compiler gates, CI, and AI-generator context

Source code for the https://kcs.library.kary.us

🧼 A common coding standard for @ramsey's PHP libraries.

PHP hard mode

👔 DressCode: checks and fixes PHP coding style, and upgrades code to newer PHP and to new versions of libraries. Built on a lossless syntax tree, so it changes only what it touches. PER-CS, PSR-12, Symfony, Nette.

Agent skills (SKILL.md), layered coding standards, a project-wide code audit and optional free/local MCP servers for AI-assisted development: Claude Code, OpenCode, Codex and any agent that reads markdown.

CDN77 Coding Standard, defensive and strict, based on Doctrine standard https://github.com/doctrine/coding-standard