Swagger-PHP

<?php

use OpenApi\Annotations as OA;

/**
 * @OA\Info(
 *     title="My First API",
 *     version="0.1"
 * )
 */
class OpenApi
{
}

class MyController
{

    /**
     * @OA\Get(
     *     path="/api/data.json",
     *     @OA\Response(
     *         response="200",
     *         description="The data"
     *     )
     * )
     */
    public function getResource()
    {
        // ...
    }
}

<?php

use OpenApi\Attributes as OA;

#[OA\Info(title: "My First API", version: "0.1")]
class OpenApi
{
}

class MyController
{

    #[OA\Get(path: '/api/data.json')]
    #[OA\Response(response: '200', description: 'The data')]
    public function getResource()
    {
        // ...
    }
}

class OpenApiSpec
{
}