Zend Framework 2 : Grab web content using Zend\Http\Client and Zend\Dom\Query

Sometime, we need to grab web content for our application, and then, get the content of selection element ( by tagname for example ). We need DOMElement nodeValue by atributeNode and its textContent. Zend Framework has components that utilize this needed. The components are Zend\Http and Zend\Dom.

For example, i want to grab the titles of the post and links from my latest blog post instead of using RSS, and show in my application like the following :

This is the easy and simple code :

namespace SampleModule;

use Zend\Mvc\Controller\AbstractActionController;
use Zend\Http\Client as HttpClient;
use Zend\Dom\Query;

class GrabsampleController extends AbstractActionController
{
    public function grabAction()
    {
        $client = new HttpClient();
        $client->setAdapter('Zend\Http\Client\Adapter\Curl');
        
        $response = $this->getResponse();
        //set content-type
        $response->getHeaders()->addHeaderLine('content-type', 'text/html; charset=utf-8'); 
        
        $client->setUri('https://samsonasik.wordpress.com/');
        $result                 = $client->send();
        //content of the web
        $body                   = $result->getBody();
        
        $dom = new Query($body);
        //get div with id="content" and h2's NodeList
        $title = $dom->execute('#content h2');
        
        $content = '';
        foreach($title as $key=>$r)
        {
            //per h2 NodeList, has element with tagName = 'a'
            //DOMElement get Element with tagName = 'a'
            $aelement     = $r->getElementsByTagName("a")->item(0);    
            
            if ($aelement->hasAttributes()) {
                $content .= '* ';                    
                $content .= '<a href='.$aelement->getAttributeNode('href')->nodeValue.'>';
                $content .= $aelement->textContent;
                $content .= '</a>';
                
                $content .= "<br />";
            }
        }
        
        $response->setContent($content);
        
        return $response;
    }
}