Image Downloader

image_downloader.php

<?php

require 'vendor/autoload.php';

use Goutte\Client;

class ImageDownloader
{
    private $images = [];

    private function crawl(string $url = ''): void
    {
        $client = new Client();
        $crawler = $client->request('GET', $url);
        $uri = $client->getHistory()->current()->getUri();
        $parsed_uri = parse_url($uri);

        $crawler->filter('img')->each(function ($node) use ($uri, $parsed_uri) {
            $src = $node->attr('src');
            if (strpos($src, 'http') !== 0) {
                if ($src[0] == '/') {
                    $src = $parsed_uri['scheme'] . '://' . $parsed_uri['host'] . $src;
                } else {
                    $src = $uri . '/' . $src;
                }
            }
            $this->images[] = $src;
        });
    }

    public function run(string $url = ''): void
    {
        $this->crawl($url);

        foreach ($this->images as $image) {
            file_put_contents('output/' . pathinfo($image)['basename'], file_get_contents($image));
        }
    }
}

$imageDownloader = new ImageDownloader();
$imageDownloader->run('https://www.google.com');