GraphQL on PHP: Create Flexible APIs of the New Generation

The book "GraphQL on PHP" is a practical guide to creating modern, flexible, and high-performance APIs using the PHP language. In an era when REST architecture is no longer meeting the demands of client applications, GraphQL is becoming the de facto standard for building complex interfaces. This book will take you from the basics of graph query theory to creating production-ready solutions.

What is this book about?

You will learn how GraphQL changes the approach to API design: instead of multiple endpoints — a single entry point, instead of rigid structures — typed schemas, and the client itself decides what data it needs. Special attention is paid to implementation in PHP — from setting up the webonyx/graphql-php library to integration with popular frameworks (Laravel, Symfony, Yii).

The book is divided into logical blocks:

• Introduction to GraphQL: history, advantages over REST, basic concepts (types, fields, arguments, mutations, subscriptions).
• Schema Architecture: designing types, interfaces, union types, and enums. Creating a readable and scalable schema.
• Resolvers and Validation: writing efficient resolvers, error handling, pagination, and data filtering.
• Security: protection against N+1 queries, query depth limiting, authentication and authorization via GraphQL.
• Integration with PHP Frameworks: ready-made examples for Laravel (Lighthouse), Symfony (OverblogGraphQLBundle), and plain PHP.
• Testing and Optimization: writing tests for GraphQL schemas, benchmarking, and caching.

Who is this book for?

The book will be useful for PHP developers of all levels:

• Beginners who want to master a modern approach to APIs.
• Experienced engineers planning to migrate from REST to GraphQL.
• Architects looking for effective solutions for complex systems.
• Freelancers and contributors to open-source projects.

What will you learn after reading?

• How to design a GraphQL schema that will grow without pain.
• How to avoid common mistakes (schema overload, inefficient queries).
• How to implement subscriptions for real-time applications.
• How to integrate GraphQL with an existing database (MySQL, PostgreSQL, MongoDB).
• How to deploy and monitor a GraphQL server in production.

The book is written in a lively language, contains many practical code examples and ready-made solutions. After studying it, you will be able to create APIs that will delight both clients and backend developers. An ideal choice for those who want to stay on the crest of the technological wave.