OpenAPI 3 for PHP APIs

When to use

• The user wants a machine-readable description of their PHP HTTP API — an OpenAPI/Swagger spec, interactive docs, or a client-facing contract.
• The user wants to generate an OpenAPI spec from PHP code — route attributes or annotations via zircote/swagger-php — rather than hand-writing YAML.
• The user wants to validate incoming requests or outgoing responses against an OpenAPI spec, or choose between contract-first and code-first workflows.

When NOT to use