parser

<?php

namespace AppBundle\Command;

use GuzzleHttp\Client;
use GuzzleHttp\Cookie\CookieJar;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\DomCrawler\Crawler;

class ParseKnpCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this
            ->setName('app:parse-knp')
            ->setDescription('parse knp')
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $em = $this->getContainer()->get('doctrine.orm.default_entity_manager');
        $base_uri = 'https://knpuniversity.com';
        $cookieJar = CookieJar::fromArray([
            'PHPSESSID'  => 'xxx',
            'REMEMBERME' => 'xxx',
        ], 'knpuniversity.com');
        $baseDir = 'xxx';
        $client = new Client(['base_uri' => $base_uri, 'cookies' => $cookieJar]);
        $request = $client->get('/courses/all');
        $crawler = new Crawler($request->getBody()->getContents());
        $coursesDOM = $crawler->filter('div.js-isotope-col > a');
        $output->writeln('parsed list');
        foreach ($coursesDOM as $courseDOM) {
            /** @var \DOMElement $courseDOM */
            $courseHref = $courseDOM->getAttribute('href');
            $request = $client->get($courseHref);
            $crawler = new Crawler($request->getBody()->getContents());
            $courseName = $crawler->filter('h1.tuts-header-font-tutorial-overview')->text();
            $output->writeln($courseName);continue;
            $dirname = preg_replace("/[^\w]+/", "", str_replace(' ', '_', $courseName));
            $output->writeln($dirname);
            $dir = $baseDir . '/' . $dirname;
            if (is_dir($dir)) {
                continue;
            } else {
                mkdir($dir);
            }
            $output->writeln('parsed ' . $courseHref . ' page');
//            $coursePartsDOM = $crawler->filter('div.chapter-list > ul > li > div > div:first-child > a');
            $coursePartsDOM = $crawler->filter('div.chapter-list > ul > li > div > div.col-xs-12 > a');
            $i = 0;
            foreach ($coursePartsDOM as $coursePartDOM) {
                /** @var \DOMElement $course */
                $coursePartHref = $coursePartDOM->getAttribute('href');
                $request = $client->get($coursePartHref);
                $crawler1 = new Crawler($request->getBody()->getContents());
                $links = $crawler1->filter('div.download-buy-buttons > ul > li > a');
                foreach ($links as $linkDOM) {
                    /** @var \DOMElement $linkDOM */
                    $linkText = trim($linkDOM->textContent);
                    $link = $linkDOM->getAttribute('href');
                    if ($i == 0 && ($linkText == 'Course Code' || $linkText == 'Course Script')) {
                        continue;
                        $output->writeln($link);
                        $file = $dir . '/' . str_replace(' ', '_', $linkText);
                        $request = $client->request('GET', $link, ['sink' => $file]);
                        if ($request->hasHeader('Content-Disposition')) {
                            $header = $request->getHeader('Content-Disposition')[0];
                            if (preg_match('/"([^"]+)"/', $header, $m)) {
                                rename($file, $dir . '/' . $m[1]);
                            }
                        }
                    }
                    if ($linkText == 'This Video') {
                        $output->writeln($linkDOM->getAttribute('href'));
                        $file = $dir . '/' . str_replace(' ', '_', $linkText);
                        $request = $client->request('GET', $link, ['sink' => $file]);
                        if ($request->hasHeader('Content-Disposition')) {
                            $header = $request->getHeader('Content-Disposition')[0];
                            if (preg_match('/"([^"]+)"/', $header, $m)) {
                                rename($file, $dir . '/' . $m[1]);
                            }
                        }
                    }
                }
                $i++;
            }
        }
    }

}

Есть ли возможность добавить описание и краткую инструкцию? Буду бланодарен.