What are Coding Standards in PHP? by Gabriel Caruso phpDay 2019 

Who am I? ● Backend Developer at Leroy Merlin ● PHP enthusiastic ● PHPSP member ● OSS contributor ● Refactor/Stickers/ELEPHANTS lover 

What are Coding Standards? 

Code - Organization - Writing - Visual 

Team - Automation - Agile - Standards 

Why should your team have a Coding Standards? 

- Ensure patterns - Code focusing in business logic - Speed up Code Review 

What are the differences between Coding Standards, Code Design and Code Style? 

Coding Standards Ensure the standardization of common patterns in the code. doctrine/coding-standard 

Code Design Is a pattern, that might affect some logics. Strict Programming 

Code Style The design of the code. 

PSRs and PHP-FIG 

How to ensure these standards? 

Code Standards tools - PHP-CS-Fixer - PHP_CodeSniffer 

Differences PHP-CS-Fixer ● Fixers ● Only work fixing code ● Array syntax to configure ● Focus only in Coding Standards ● Easy to create Fixers PHP_CodeSniffer ● Linters ● Can only alert without fixing ● XML syntax to configure ● Flexible for Code Design and Mess Detector ● Harder to create Sniffs 

Continuous Integration - A step in the CI tool to report any fail - Git hooks to avoid commits with fails 

How this affects your Git history? 

Git - Git blame can be overwritten - Git bisect reports false-positives - Creates unnecessary “fix cs” commits 

How to implement a new Coding Standards in PHP? 

Roadmap Coding Standards First step, not changing any logic Strict Programming Helps to define the strict code style PHP 7 Scalar Type Hints Review your codebase to avoid false-positives Strict types Last step, closing the circle 

@carusogabriel Questionings? Thank you ♡