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PSR Standards in PHP: A Practical Guide for Developers

Barbara Streisand

Jan 07, 2025 am 06:22 AM

PSR Standards in PHP: A Practical Guide for Developers

Are you tired of wrestling with inconsistent PHP codebases or struggling to make different packages work together? You’re not alone! In this series, we’ll explore how PHP-FIG’s PSR standards can transform your development experience.

What is PHP-FIG?

PHP-FIG is a group of PHP project representatives working together to advance the PHP ecosystem. Their primary contribution is the PSR system, which defines coding standards and interfaces that enable better interoperability between PHP packages and frameworks.

Why PSRs Matter

PSRs solve several critical challenges in PHP development:

Code Consistency: Standardized coding styles make code more readable
Interoperability: Common interfaces allow different packages to work together seamlessly
Best Practices: Established patterns improve code quality and maintainability

Series Overview

This series will cover all accepted PSRs in detail. Here’s what we’ve published so far:

PSR-1: Basic Coding Standard - Published Jan 6, 2025
PSR-3: Logger Interface - Coming Jan 7, 2025
PSR-4: Autoloading Standard - Coming Jan 8, 2025
PSR-6: Caching Interface - Coming Jan 9, 2025
PSR-7: HTTP Message Interface - Coming Jan 10, 2025
PSR-11: Container Interface - Coming Jan 11, 2025
PSR-12: Extended Coding Style - Coming Jan 12, 2025
PSR-13: Hypermedia Links - Coming Jan 13, 2025
PSR-14: Event Dispatcher - Coming Jan 14, 2025
PSR-15: HTTP Handlers - Coming Jan 15, 2025
PSR-16: Simple Cache - Coming Jan 16, 2025

Stay tuned! We’ll update this post with links as each new article is published.

Practical Learning

Each post will include:

Detailed explanation of the standard
Practical implementation examples
Common pitfalls and solutions
Integration with popular frameworks

Getting Started

To follow along with this series:

Clone our companion repository:

git clone https://github.com/jonesrussell/php-fig-guide.git
cd php-fig-guide
composer install

Each PSR implementation has its own:
- Directory under src/
- Complete working examples
- Tests to verify compliance
- Tagged release (e.g., v0.1.0 for PSR-1)
Use the provided Composer scripts:

# Check coding standards
composer check-style

# Fix coding standards automatically
composer fix-style

# Run tests
composer test

Resources

PHP-FIG Website
PSR Index
Our Example Repository

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