guzzle-404.php

<?php require_once(__DIR__.'/../../vendor/autoload.php');
use Guzzle\Http\Client;
use Guzzle\Common\Event;
use Guzzle\Http\Message\Request;
use Guzzle\Http\Message\Response;
use Guzzle\Http\Exception\BadResponseException;

$url = 'http://www.amazon.com';
$client = new Client($url);

$client->getEventDispatcher()->addListener('request.error', function(Event $event) {

    if ($event['response']->getStatusCode() == 404) {
        $newResponse = new Response($event['response']->getStatusCode());
        $event['response'] = $newResponse;
        $event->stopPropagation();
    }

});

$uri = 'XX';
$request = $client->get('/'.$uri);
$response = $request->send();

echo $uri.'::'.$response->getStatusCode();