Modern PHP: New Features and Best Practices

Introduction

The book "Modern PHP: New Features and Best Practices" (original title Modern PHP: New Features and Good Practices) by Josh Lockhart is not just another language textbook, but a kind of manifesto for those who want to write PHP professionally, cleanly, and efficiently. Published in 2015, it remains relevant today because it lays down fundamental principles that never become outdated: modularity, testability, adherence to standards, and the use of modern tools.

Josh Lockhart is a well-known developer in the PHP community, the creator of the popular microframework Slim, and one of the active participants in the movement for PHP standardization (PSR). His experience and authority make this book especially valuable for those who want to transition from "craft" coding to professional development.

What This Book Is About

The book consists of 12 chapters covering key aspects of modern PHP development. It does not teach syntax from scratch — it assumes the reader is already familiar with the basics of the language. Instead, the author focuses on how to use PHP correctly in real-world projects.

Main topics:

• New features of PHP 5.4, 5.5, 5.6 and an overview of PHP 7 — traits, generators, closures, return type declarations, the spaceship operator, and much more.
• Object-Oriented Programming (OOP) — SOLID principles, design patterns, exception handling.
• PSR Standards — PSR-1, PSR-2, PSR-3, PSR-4, and PSR-7. The author explains why they are needed and how to apply them.
• Composer — the dependency manager for PHP: installation, creating your own packages, autoloading.
• Testing — unit testing with PHPUnit, integration testing, TDD.
• Profiling and Debugging — Xdebug, Blackfire.io, performance analysis.
• Security — protection against XSS, CSRF, SQL injection, password handling.
• Deployment and DevOps — continuous integration, deployment with Capistrano and Ansible.

Who This Book Is For

The book is aimed at PHP developers who already have basic experience (one to two years) and want to level up. It will be useful for:

• Those who write PHP "the old way" (mixing HTML and logic, using global variables) and want to transition to modern practices.
• Developers transitioning from other languages (Java, Python, C#) who want to understand the specifics of PHP.
• Team leads and architects implementing quality standards in their team.
• Freelancers looking to increase the value of their services through a professional approach.

What the Reader Will Learn

After reading the book, you will be able to:

• Confidently use new features of PHP 5.4+ and PHP 7.
• Design applications adhering to SOLID principles.
• Organize code using namespaces and Composer autoloading.
• Write unit tests and apply TDD.
• Work with PSR standards and understand their significance.
• Create and publish your own packages on Packagist.
• Ensure the security of web applications.
• Set up development and deployment environments.

Strengths of the Book

• Practical focus. Each chapter contains code examples that can be immediately applied in work.
• Emphasis on standards. The book popularizes PSR and shows how they make code compatible and readable.
• Clear structure. The material is divided into logical blocks, from simple to complex.
• Author's authority. Josh Lockhart is not just a theorist, but the creator of real working tools (Slim, PHP The Right Way).
• Concise volume. 266 pages — a concentrate of knowledge without