Connecting to Websocket with PHP Client

PHP Websocket Client - Keep connection open

Since the php script that renders the page finishes execution, you need to implement websockets on the client itself using a js script

<?php 
   // here output your page
   wss_path = 'wss://example.com/?token=xyz123456';
?>

// JS script (see its working results in console by pressing `F12`)
<script>
  let socket = new WebSocket(<?= wss_path ?>);

  socket.onopen = function(e) {
    console.log('[open] Connection opened');
    socket.send("Hi! I am a new web-socket client.");
  };

  socket.onmessage = function(event) {
    const message = JSON.parse(event.data);
    console.log('From the server:', message);
  };

  socket.onclose = function(event) {
    if (event.wasClean) {
      console.log(`[close] Connetion closed clearly, code=${event.code} reason=${event.reason}`);
    } else {
      console.log('[close] Сonnection closed unexpectedly');
    }
  };

  socket.onerror = function(error) {
    console.log(`[error] ${error}`);
  };
</script>

Unable to connect Javascript client to PHP server using websockets

I found the answer. I was missing the handshake headers when establishing web socket with Javascript client. Please refer to this question and look for the PHP - Server code on the question; since it is the proper way to create a web socket between Javascript client and PHP server and solved my problem.

Connecting to a ratchet websocket server using PHP

I have tried this project alongside Ratchet, and it works perfectly as a PHP client:

https://github.com/Textalk/websocket-php

Install with:
composer require textalk/websocket 1.0.*

And a usage example:

<?php

require('vendor/autoload.php');

use WebSocket\Client;

$client = new Client("ws://127.0.0.1:1234");
$client->send("Hello from PHP");

echo $client->receive() . "\n"; // Should output 'Hello from PHP'

I tested, and this also works with SSL if you're using wss:// (for remote websockets).

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