hello world with Silex, use of json_encode

gistfile1.php

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Symfony\Component\HttpFoundation\Response;


$app = new Silex\Application();
$app['debug'] = true;



$app->get('/', function(){
	return new Response(json_encode("Hello world"), 200, array( 'Content-Type' => 'application/json' ));
	//return json_encode("Hello world");
});


$app->run();