symfony quick csv export

/**
 * @Route("/app/links/export.csv", name="app_export_links")
 */
public function exportLinksAction()
{
    $em = $this->getDoctrine()->getManager();

    $links = $em
        ->getRepository(Links::class)
        ->findAll();

    $rows = [];
    foreach ($links as $link) {
        $data = [$link->getId(), $link->getLink()];

        $rows[] = implode(',', $data);
    }

    $content = implode("\n", $rows);
    $response = new Response($content);
    $response->headers->set('Content-Type', 'text/csv');

    return $response;
}