giorrrgio/composer.json

## composer.json
{
    "require": {
        "symfony/dom-crawler": "*",
        "symfony/css-selector": "*"
    }
}

## scraper1.php
<?php

require_once 'vendor/autoload.php';

## scraper2.php
<?php

use Symfony\Component\DomCrawler\Crawler;

require_once 'vendor/autoload.php';

$html = '<html><body><p>Hello World!</p></body></html>';

$crawler = new Crawler($html);

var_dump($crawler->html());

## scraper3.php
<?php

use Symfony\Component\DomCrawler\Crawler;

require_once 'vendor/autoload.php';

$url = 'http://en.wikipedia.org/wiki/Flying_Spaghetti_Monster';

$html = file_get_contents($url);

$crawler = new Crawler($html);

$history = $crawler
    ->filter('h2:contains("History") + p');

var_dump($history->html());
	{
	"require": {
	"symfony/dom-crawler": "*",
	"symfony/css-selector": "*"
	}
	}
	<?php

	use Symfony\Component\DomCrawler\Crawler;

	require_once 'vendor/autoload.php';

	$html = '<html><body><p>Hello World!</p></body></html>';

	$crawler = new Crawler($html);

	var_dump($crawler->html());