Using PHP with Socket io

Question

Is it possible to use Sockets io on the client side and communicate with a PHP based application on the server  Does PHP even support such a  long-lived connection  way of writing code    All the sample code I find for socket io seems to be for node js on the server side  so no help there

User · Answer

If you really want to use PHP as your backend for socket.io ,here are what I found. Two socket.io php server side alternative.

https://github.com/walkor/phpsocket.io

https://github.com/RickySu/phpsocket.io

Exmaple codes for the first repository like this.

use PHPSocketIO\SocketIO;

// listen port 2021 for socket.io client
$io = new SocketIO(2021);
$io->on('connection', function($socket)use($io){
  $socket->on('chat message', function($msg)use($io){
    $io->emit('chat message', $msg);
  });
});

User · Answer

We are now in 2018 and hoola  there is a way to implement WS and WAMPServer on php  It  s Called Ratchet

User · Answer

It may be a little late for this question to be answered  but here is what I found   I don t want to debate on the fact that nodes does that better than php or not  this is not the point   The solution is   I haven t found any implementation of socket io for PHP   But there are some ways to implement WebSockets  There is this jQuery plugin allowing you to use Websockets while gracefully degrading for non-supporting browsers  On the PHP side  there is this class which seems to be the most widely used for PHP WS servers

User · Answer

Erm  why would you want to   Leave PHP on the backend and NodeJS Sockets to do its non-blocking thing   Here is something to get you started   http   groups google com group socket io browse thread thread 74a76896d2b72ccc  Personally I have express running with an endpoint that is listening expressly for interaction from PHP   For example  if I have sent a user an email  I want socket io to display a real-time notification to the user   Want interaction from socket io to php  well you can just do something like this   var http   require  http                host   WWW HOST              clen    userid     userid              site   http createClient 80  host               request   site request  POST     modules nodeim includes signonuser inc php                       host  host  Content-Length  clen length  Content-Type   application x-www-form-urlencoded                           request write  userid     userid         request end        Seriously  PHP is great for doing server side stuff and let it be with the connections it has no place in this domain now   Why do anything long-polling when you have websockets or flashsockets

User · Answer

I was looking for a really simple way to get PHP to send a socket io message to clients   This doesn t require any additional PHP libraries - it just uses sockets   Instead of trying to connect to the websocket interface like so many other solutions  just connect to the node js server and use  on  data   to receive the message   Then  socket io can forward it along to clients   Detect a connection from your PHP server in Node js like this     You might have something like this - just included to show object setup var app   express    var server   http createServer app   var io   require  socket io   listen server    server on  connection   function s          If connection is from our server  localhost      if s remoteAddress       ffff 127 0 0 1             s on  data   function buf                var js   JSON parse buf               io emit js msg js data     Send the msg to socket io clients                         Here s the incredibly simple php code - I wrapped it in a function - you may come up with something better   Note that 8080 is the port to my Node js server - you may want to change   function sio message  message   data         socket   socket create AF INET  SOCK STREAM  SOL TCP        result   socket connect  socket   127 0 0 1   8080       if   result            die  cannot connect   socket strerror socket last error    PHP EOL              bytes   socket write  socket  json encode Array  msg    gt   message   data    gt   data         socket close  socket       You can use it like this   sio message  chat message   Hello from PHP      You can also send arrays which are converted to json and passed along to clients   sio message  DataUpdate  Array  Data1    gt   something    Data2    gt   something else      This is a useful way to  trust  that your clients are getting legitimate messages from the server   You can also have PHP pass along database updates without having hundreds of clients query the database   I wish I d found this sooner - hope this helps

User · Answer

UPDATE  Aug 2014 The current socket io v1 0 site has a PHP example - https   github com rase- socket io-php-emitter

User · Answer

If you want to use socket io together with php this may be your answer      project website   elephant io  they are also on github   https   github com wisembly elephant io  Elephant io provides a socket io client fully written in PHP that should be usable everywhere in your project   It is a light and easy to use library that aims to bring some real-time functionality to a PHP application through socket io and websockets for actions that could not be done in full javascript   example from the project website  communicate with websocket server through php   php server  use ElephantIO Client as Elephant    elephant   new Elephant  http   localhost 8000    socket io   1  false  true  true     elephant- gt init     elephant- gt send      ElephantIOClient  TYPE EVENT      null      null      json encode array  name    gt   foo    args    gt   bar        elephant- gt close     echo  tryin to send  bar  to the event  foo      socket io server  var io   require  socket io   listen 8000    io sockets on  connection   function  socket      console log  user connected        socket on  foo   function  data        console log  here we are in action event and data is      data

User · Answer

I haven t tried it yet  but you should be able to do this with ReactPHP and this socket component  Looks just like Node  but in PHP

User · Answer

If you really want to use PHP as your backend for WebSockets  these links can get you on your way   https   github com lemmingzshadow php-websocket  http   www htmlgoodies com html5 other create-a-bi-directional-connection-to-a-php-server-using-html5-websockets html fbid QqpDVi8FqD9

User · Answer

I know the struggle man  But I recently had it pretty much working with Workerman   If you have not stumbled upon this php framework then you better check this out    Well  Workerman is an asynchronous event driven PHP framework for easily building fast  scalable network applications   I just copied and pasted that from their website hahahah http   www workerman net en    The easy way to explain this is that when it comes web socket programming all you really need to have is to have 2 files in your server or local server  wherever you are working at     server php  source code which will respond to all the client s request  client php client html  source code which will do the requesting stuffs    So basically  you right the code first on you server php and start the server  Normally  as I am using windows which adds more of the struggle  I run the server through this command --  php server php start  Well if you are using xampp  Here s one way to do it  Go to wherever you want to put your files  In our case  we re going to the put the files in  C  xampp htdocs websocket server php  C  xampp htdocs websocket client php or client html  Assuming that you already have those files in your local server  Open your Git Bash or Command Line or Terminal or whichever you are using and download the php libraries here    https   github com walkor Workerman  https   github com walkor phpsocket io  I usually download it via composer and just autoload those files in my php scripts   And also check this one  This is really important  You need this javascript libary in order for you client php or client html to communicate with the server php when you run it   https   github com walkor phpsocket io tree master examples chat public socket io-client  I just copy and pasted that socket io-client folder on the same level as my server php and my client php  Here is the server php sourcecode    lt  php require   DIR       vendor autoload php    use Workerman Worker  use PHPSocketIO SocketIO      listen port 2021 for socket io client  io   new SocketIO 2021    io- gt on  connection   function  socket use  io        socket- gt on  send message   function  msg use  io            io- gt emit  new message    msg                Worker  runAll      And here is the client php or client html sourcecode   lt  DOCTYPE html gt   lt html gt       lt head gt           lt title gt Chat lt  title gt           lt meta charset  UTF-8  gt           lt meta name  viewport  content  width device-width  initial-scale 1 0  gt               lt  head gt       lt body gt           lt div id  chat-messages  style  overflow-y  scroll  height  100px    gt  lt  div gt                   lt input type  text  class  message  gt       lt  body gt       lt script src  https   ajax googleapis com ajax libs jquery 3 3 1 jquery min js  gt  lt  script gt           lt script src  socket io-client socket io js  gt  lt  script gt         lt script gt              var socket   io connect  ws   127 0 0 1 2021                     message   on  change   function                    socket emit  send message     this  val                       this  val                                   socket on  new message   function data                       chat-messages   append   lt p gt     data    lt  p gt                          lt  script gt   lt  html gt    Once again  open your command line or git bash or terminal where you put your server php file  So in our case  that is C  xampp htdocs websocket  and typed in php server php start and press enter   Then go to you browser and type http   localhost websocket client php to visit your site  Then just type anything to that textbox and you will see a basic php websocket on the go   You just need to remember  In web socket programming  it just needs a server and a client  Run the server code first and the open the client code  And there you have it  Hope this helps

User · Answer

How about this   PHPSocketio    It is a socket io php server side alternative  The event loop is based on pecl event extension  Though haven t tried it myself till now

User · Answer

Look in this libraryes for php http   phptrends com category 70  Or use native from php http   www php net manual en book sockets php

User · Answer

For  long-lived connection  you mentioned  you can use Ratchet for PHP  It s a library built based on Stream Socket functions that PHP has supported since PHP 5   For client side  you need to use WebSocket that HTML5 supported instead of Socket io  since you know  socket io only works with node js     In case you still want to use Socket io  you can try this way   - find  amp  get socket io js for client to use - work with Ratchet to simulate the way socket io does on server  Hope this helps

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