How to Build an SDK in PHP

In a detailed exploration of building a Software Development Kit (SDK) in PHP, this tutorial by Steve McDougall outlines the critical decisions and steps involved in creating a developer-friendly SDK for a fictional e-commerce startup's API. The focus is on enhancing the developer experience by ensuring compatibility, limiting dependencies, and providing clear, programmatic control over API interactions. Key elements include designing resources, handling HTTP requests and responses using PSR standards, implementing authentication, and facilitating pagination and data handling through DTOs. The tutorial emphasizes the importance of balancing opinionation and flexibility, showcasing how to maintain interoperability with the PHP ecosystem while offering detailed insights into building and testing the SDK. Finally, it discusses the potential of using Speakeasy's approach to automatically generate robust SDKs from an OpenAPI specification, highlighting the benefits of focusing on creating a strong API specification while leveraging tools for SDK development.