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A REST API exposes data and functionality over HTTP using standard, predictable patterns — a common way for applications to talk to each other.
Core Concepts
Resources are addressed by URL, and standard HTTP methods (GET, POST, PUT, DELETE) indicate the action being taken — GET to read data, POST to create it, and so on.
Running One on Standard Hosting
A REST API built in PHP runs on any standard shared hosting plan, since it's fundamentally just PHP scripts responding to HTTP requests — no special server software required for basic use cases.
