Guzzle\Log\MessageFormatter issue. Check output in guzzle.log.

composer.json

{
    "require": {
        "guzzle/guzzle": "3.4.1",
        "monolog/monolog": "~1.5"
    }
}

test.php

<?php

require 'vendor/autoload.php';

use Guzzle\Http\Client;
use Guzzle\Plugin\Log\LogPlugin;
use Guzzle\Log\MessageFormatter;
use Guzzle\Log\MonologLogAdapter;

$client = new CLient('http://en.wikipedia.org');

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

$logger = new Logger('guzzle');
$logger->pushHandler(new StreamHandler('guzzle.log', Logger::DEBUG));
$logAdapter = new MonologLogAdapter($logger);
$logFormatter = new MessageFormatter('{code} {method} {url} in {total_time}s');
$logPlugin = new LogPlugin($logAdapter, $logFormatter);
$client->addSubscriber($logPlugin);


$request = $client->get('wiki/Guzzle');

$response = $request->send();