<?php

use Symfony\Component\HttpFoundation\JsonResponse;

// use fitting Symfony response classes
$data = [
    'data' => ['foo', 'bar', 'key' => 'value']
];
$response = new JsonResponse($data);
$response->sendContent();

{"data":{"0":"foo","1":"bar","key":"value"}}

• Using an object in ExpressionLanguage
• Yaml indentation is a part of its structure. That's actually bad
• File lock in Symfony Lock component

PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8