PHP + NodeJS + Socket.io

Broadcast.php

use GuzzleHttp\Client;

$client = new Client([
    'base_uri' => '127.0.0.1:8001',
]);

$client->request('POST', 'http://httpbin.org/post', [
    'body' => 'raw data'
]);

client.js

var socket = io('http://127.0.0.1:8001');
socket.emit('joining', 'a_room');

socket.on('message', function (data) {
    console.log(data);
});

send = function(message) {
    socket.emit('message', message);
}

server.js

var app = require('http').createServer(handler)
var io = require('socket.io')(app);

app.listen(8001);

io.on('connection', function (socket) {
    socket.on('joining', function(room) {
        socket.room = room;
        socket.join(room);
    });
    socket.on('message', function(message) {
        socket.broadcast.to(room).emit('message', message);
    });
});

function handler (req, res) {

    req.on('data', function(chunk) {
        io.sockets.in('a_room').emit('message', JSON.parse(chunk.toString()));
    });

    res.writeHead(200);
    res.end("Message sent");
}