index.js

var http = require('http');

var app = function (req, res) {
  res.writeHead(200, {
    'Content-Type': 'application/text'
  });
  res.end('Hello World');
};

var server = http.createServer(app);

server.listen(1337, function() {
  console.log("Server running at http://127.0.0.1:1337");
});

index.php

<?php

$http = new swoole_http_server("127.0.0.1", 1337);

$http->on('start', function ($server) {
    echo "Swoole http server is started at http://127.0.0.1:1337\n";
});

$http->on('request', function ($request, $response) {
    $response->header('Content-Type', 'application/text');
    $response->end("Hello World");
});

$http->start();

results.txt

# Node 10.7
$ node index.js
$ wrk -t4 -c400 -d10s http://127.0.0.1:1337
Running 10s test @ http://127.0.0.1:1337
  4 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    15.91ms    3.62ms  52.44ms   71.28%
    Req/Sec     5.75k   449.16     6.70k    81.00%
  228929 requests in 10.00s, 44.10MB read
  Socket errors: connect 0, read 306, write 0, timeout 0
Requests/sec:  22881.62
Transfer/sec:      4.41MB

# PHP 7.1
$ php index.php
$ wrk -t4 -c400 -d10s http://127.0.0.1:1337
Running 10s test @ http://127.0.0.1:1337
  4 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     6.34ms    6.62ms  99.25ms   89.06%
    Req/Sec    16.09k     3.88k   28.68k    69.85%
  642395 requests in 10.08s, 104.76MB read
  Socket errors: connect 0, read 232, write 0, timeout 0
Requests/sec:  63710.90
Transfer/sec:     10.39MB