DiaEsCrawler.php

<?php

namespace App\Crawler;

use Symfony\Component\DomCrawler\Crawler;
use Symfony\Component\Panther\Client;

class DiaEsCrawler
{
    public function foo()
    {
        $client = Client::createChromeClient();
        $client->request('GET', 'https://www.dia.es/compra-online/');

        $crawler = $client->waitFor('#nav-submenu-container');

        $output = [];
        $exclude = ['Novedades', 'Ver marcas', 'Soy solidario', 'Ofertas'];

        $crawler
            ->filter('#nav-submenu-container > li')
            ->each($this->getClosure($output, $exclude));

        $client->quit();
    }

    /**
     * @param array $output
     * @param array $exclude
     * @return \Closure
     */
    private function getClosure(array $output, array $exclude): \Closure
    {
        return function (Crawler $node, $i) use (&$output, $exclude) {
            if ($node->filter('a')->count() > 0) {
                $nodeLink = $node->filter('a');
                $text = trim(strip_tags($nodeLink->html()));

                if (!in_array($text, $exclude)) {
                    $output[$i] = [
                        'text' => $text,
                        'link' => $nodeLink->attr('href')
                    ];

                    if ($node->children('ul')->count() > 0) {
                        $node
                            ->children('ul > li')
                            ->each($this->getClosure2($output, $exclude, $i));
                    }
                }
            }
        };
    }

    /**
     * @param array $output
     * @param array $exclude
     * @param       $i
     * @return \Closure
     */
    private function getClosure2(array $output, array $exclude, $i): \Closure
    {
        return function (Crawler $node, $x) use (&$output, $exclude, $i) {
            $nodeLink = $node->filter('a');
            $text = trim(strip_tags($nodeLink->html()));

            if (!in_array($text, $exclude)) {
                $output[$i]['child'][$x] = [
                    'text' => $text,
                    'link' => $nodeLink->attr('href')
                ];

                if ($node->children('ul')->count() > 0) {
                    $node
                        ->children('ul > li')
                        ->each($this->getClosure3($output, $exclude, $i, $x));
                }
            }
        };
    }

    /**
     * @param array $output
     * @param array $exclude
     * @param       $i
     * @param       $x
     * @return \Closure
     */
    private function getClosure3(array $output, array $exclude, $i, $x): \Closure
    {
        return static function (Crawler $node) use (&$output, $exclude, $i, $x) {
            $nodeLink = $node->filter('a');
            $text = trim(strip_tags($nodeLink->html()));

            if (!in_array($text, $exclude)) {
                $output[$i]['child'][$x]['child'][] = [
                    'text' => $text,
                    'link' => $nodeLink->attr('href')
                ];
            }
        };
    }
}

IndexController.php

<?php

declare(strict_types = 1);

namespace App\Controller;

use App\Crawler\DiaEsCrawler;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\Routing\Annotation\Route;

class IndexController
{
    /**
     * @Route(
     *      path="/",
     *      name="index",
     *  )
     */
    public function __invoke(DiaEsCrawler $diaEsCrawler): JsonResponse
    {
        return new JsonResponse($diaEsCrawler->foo());
    }
}