Learn how to decouple a PHP SDK from a specific HTTP client by leveraging PSR‑7, PSR‑17, and PSR‑18 standards together with php‑http/discovery, enabling users to plug in Guzzle, Symfony HttpClient, or any compatible client while keeping the SDK lightweight and flexible.
This article explains the concept of Bring Your Own HTTP Client in PHP, outlines the relevant PSR-7, PSR-17, and PSR-18 standards, shows how php-http/discovery simplifies client selection, and provides concrete SDK code and usage examples for flexible, high‑performance HTTP integration.
Guzzle is a powerful, extensible PHP HTTP client that simplifies sending synchronous or asynchronous requests, supports PSR‑7 and PSR‑18 standards, offers a middleware system, and integrates easily via Composer, making it ideal for API integration, file transfer, microservice communication, web crawling, and testing.
Workerman/http-client is a high‑performance, asynchronous PHP HTTP client that follows PSR‑7, includes a built‑in connection pool, supports multiple protocols, and can be installed via Composer; the guide shows installation steps, coroutine usage, concurrent request examples, and integration with Webman.
