A helper to open the content of a Symfony/Laravel response in your browser, really useful for test debugging.

helpers.php

<?php

use Symfony\Component\DomCrawler\Crawler;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Response;

/**
 * Opens a response in the default browser.
 */
function open_response(Response $response): void
{
    // Remove the page refresh on redirects, to avoid unwanted redirections.
    if ($response instanceof RedirectResponse) {
        $crawler = new Crawler($response->getContent());
        $crawler->filter('meta[http-equiv=refresh]')->each(function (Crawler $crawler) {
            foreach ($crawler as $node) {
                $node->parentNode->removeChild($node);
            }
        });
        $response->setContent($crawler->html());
    }

    // Create a temporary file with the content of the response
    $filePath = tempnam('/tmp', 'html-response-');
    file_put_contents($filePath, $response->getContent());

    // Open the file
    $filePath = escapeshellarg($filePath);
    switch (php_uname('s')) {
        case 'Darwin':
            exec("open $filePath");
            break;
        case 'Windows':
            exec("start $filePath");
            break;
        default:
            exec("xdg-open $filePath");
    }
}