PHP vs Node.js scraping

bench.js

/*
$ npm install request
$ node bench.js
*/

var request = require('request');
var url = 'http://www.google.com';
var total_requests = 100;

var i;
var counter = 0;
var start = +new Date();
for (i=0; i<total_requests; i++) {
  request(url, function (error, response, body) {
    if (error) {
      console.log("error :(");
    } else {
      console.log(response.statusCode);
    }
    if (++counter == total_requests) {
      var end = +new Date();
      console.log(i +", "+(end-start)/1000);
    }
  });
}

bench.php

<?php

/*
$ git clone https://github.com/amphp/artax.git
$ cd artax
$ composer install
$ php bench.php
*/

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

use Amp\Artax\Client;

const URI = 'http://www.google.com';
const MAX_SOCKETS = 5; // <-- Same as node's default (fairness!)
const TOTAL_REQUESTS = 100;

function onUpdate($data, $i) {
    if ($data[0] === Amp\Artax\Notify::RESPONSE) {
        echo "{$i} | ", $data[1]->getStatus(), "\n";
    }
}

$startedAt = microtime(1);
$client = new Client;
$client->setOption(Client::OP_HOST_CONNECTION_LIMIT, MAX_SOCKETS);

for ($i=0; $i<TOTAL_REQUESTS; $i++) {
    $promises[] = $promise = $client->request(URI);
    $promise->watch(function($data) use ($i) { onUpdate($data, $i); });
}

$responses = Amp\wait(Amp\all($promises));
var_dump(microtime(1) - $startedAt);

Pretty good internet

UnbrandedTech:~ james$ speedtest-cli 
Retrieving speedtest.net configuration...
Retrieving speedtest.net server list...
Testing from Sai gon Postel Corporation (180.93.246.1)...
Selecting best server based on latency...
Hosted by FPT Telecom (Ho Chi Minh City) [7.56 km]: 4.095 ms
Testing download speed........................................
Download: 40.80 Mbit/s
Testing upload speed..................................................
Upload: 44.87 Mbit/s

Results (http://www.example.com)

NodeJS v5.0.0
[email protected]

UnbrandedTech:~ james$ node benchmark.js
100, 0.788

PHP 5.6.16 (cli)
amphp/artax 2.0

UnbrandedTech:~ james$ php benchmark.php
float(4.8010399341583)

Node is ~83.6% faster?