react-example.php

<?php

require 'vendor/autoload.php';

const RESPONSE_SIZE = 20;  // in megabytes

$app = function ($request, $response) {
  $data = str_repeat(chr(rand(32,126)),  RESPONSE_SIZE * 1024 * 1024);
  
  print sprintf("Allocated memory usage: %s, Memory Limit: %d, PID: %d\n",
  	number_format(memory_get_usage()),
  	ini_get("memory_limit"),
  	getmypid()
  );
  
  $response->writeHead(200, array('Content-Type' => 'text/plain'));
  $response->end($data);
  
  unset($data);
};

// Make sure garbage collection is there, and enabled
if(!function_exists('gc_enable'))
	die("Please use PHP 5.3+ with Garbage Collection enabled");
gc_enable();

// Taken from React examples.
$loop = React\EventLoop\Factory::create();
$socket = new React\Socket\Server($loop);
$http = new React\Http\Server($socket, $loop);

$http->on('request', $app);
echo "Server running at http://127.0.0.1:1337\n";

$socket->listen(1337);
$loop->run();