Zend Feed and Guzzle

You may have worked with Zend Feed as a standalone component. I don’t know whether you have integrated Zend framework Feed with Guzzle as Http Client.

This post is inspired by Matthew Weier O’Phinney, who have mentioned the same on github.

Our composer.json looks

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{
    "require": {
        "guzzlehttp/guzzle": "~5.2",
        "zendframework/zend-feed": "~2.3",
        "zendframework/zend-servicemanager": "~2.3"
    },
    "autoload": {
        "psr-0": {
            "": "src/"
        }
    }
}

Zen\Feed\Reader\Reader have a method importRemoteFeed which accepts an instance of Zend\Feed\Reader\Http\ClientInterface.

The Zend\Feed\Reader\Http\ClientInterface have only one method get which returns Zend\Feed\Reader\Http\ResponseInterface.

So any http client that satisfy the interface will work. Let’s create them.

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<?php
// src/GuzzleClient.php
use GuzzleHttp\Client;
use Zend\Feed\Reader\Http\ClientInterface;

class GuzzleClient implements ClientInterface
{
    protected $guzzle;

    public function __construct(Client $guzzle)
    {
        $this->guzzle = $guzzle;
    }

    public function get($uri)
    {
        $response  = $this->guzzle->get($uri);
        return new GuzzleResponse($response);
    }
}

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<?php
// src/GuzzleResponse.php
use GuzzleHttp\Client;
use GuzzleHttp\Message\Response;
use Zend\Feed\Reader\Http\ClientInterface;
use Zend\Feed\Reader\Http\ResponseInterface;
use Zend\Feed\Reader\Reader;

class GuzzleResponse implements ResponseInterface
{
    protected $response;

    public function __construct(Response $response)
    {
        $this->response = $response;
    }

    public function getStatusCode()
    {
        return $this->response->getStatusCode();
    }

    public function getBody()
    {
        return (string) $this->response->getBody();
    }
}

Wiring up,

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<?php
require __DIR__ . '/vendor/autoload.php';

use GuzzleHttp\Client;
use Zend\Feed\Reader\Reader as FeedReader;

$client = new GuzzleClient(new Client());
$feed = FeedReader::importRemoteFeed('http://feeds.feedburner.com/harikt/YKAJ', $client);

echo 'The feed contains ' . $feed->count() . ' entries.' . "\n\n";
foreach ($feed as $entry) {
    echo 'Title: ' . $entry->getTitle() . "\n";
    // echo 'Description: ' . $entry->getDescription() . "\n";
    echo 'URL: ' . $entry->getLink() . "\n\n";
}

You can run from the command line.

Once PSR-7 is accepted, and if both guzzle and zend framework (zf3) is built on top of it, we may not need to do the same.

Happy PhPing.

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