PHP API Development: Creating Modern RESTful Services

The book "PHP API Development" is a comprehensive practical guide to creating modern web interfaces (APIs) using the PHP language. In an era where microservice architecture and application interaction are becoming industry standards, the ability to design and implement high-quality APIs is a key skill for any web developer.

What this book is about

The book covers the entire API creation cycle: from the basic principles of REST and the HTTP protocol to advanced topics such as authentication (JWT, OAuth 2.0), versioning, pagination, caching, and error handling. You will learn how to properly structure code, use modern PHP frameworks (Laravel, Symfony), and build APIs that are easy to scale and maintain.

Who this book is for

• Beginner PHP developers who want to learn API creation from scratch.
• Experienced programmers looking to systematize their knowledge and learn industry best practices.
• Full-stack developers seeking to expand their backend development skills.
• Team leads and architects who design microservice systems.

What you will learn

• Basics of the HTTP protocol, request methods (GET, POST, PUT, DELETE), and response codes.
• Principles of RESTful API design: resources, endpoints, HATEOAS.
• Working with databases via ORM (Eloquent, Doctrine) for APIs.
• Implementing authentication and authorization: JWT, API keys, OAuth 2.0.
• Input validation and exception handling.
• API documentation using OpenAPI/Swagger.
• Testing (unit tests, integration tests) and debugging.
• Deploying APIs on production servers and performance monitoring.

Why you should read it

The book is written by a practitioner with many years of experience. All code examples are accompanied by explanations and are ready for use in real projects. You will not just learn theory — you will be able to immediately apply the knowledge gained to create your own API. Special attention is paid to security (protection against SQL injection, XSS, CSRF) and performance (caching, query optimization).

After reading this book, you will be able to confidently develop APIs of any complexity — from a simple backend for a mobile application to a high-load microservice system. The book will become your desktop reference for years to come.