Add PHP 8-compatible WebSocket example (client + server)

[niccolovettorello1997]

PHP 8 WebSocket Example (Ratchet) — server + Pawl client

This PR adds a fully working WebSocket example compatible with PHP 8.3+ (including PHP 8.4), tested on Linux and macOS.

New example

examples/php8-demo/

Includes

• server.php — minimal Ratchet WebSocket server
• client.php — PHP client using Ratchet/Pawl for event-loop compatibility
• composer.json — define dependencies
• README.md — updated documentation and usage instructions

Highlights

• Demonstrates modern Ratchet usage in PHP 8 environments
• Fully self-contained example; no changes to Ratchet core
• Uses Pawl client to integrate properly with the Ratchet event loop
• Safe to merge; the client dependency is local to the example and does not affect Ratchet core or backward compatibility

Tested successfully with

OS	PHP Version
Linux	8.3.x
macOS	8.4.x

[WyriHaximus]

• client.php — PHP client using textalk/websocket

Have you considered https://github.com/ratchetphp/Pawl for the client instead of something that doesn't hook into the event loop?

[niccolovettorello1997]

Hi @WyriHaximus , thanks for the suggestion!

I’ve updated the PHP client to use Ratchet/Pawl, which integrates cleanly with the event loop and keeps the example fully compatible with PHP 8.3+.

The example (examples/php8-demo/) now contains:

• server.php — minimal Ratchet WebSocket server
• client.php — Pawl-based client
• composer.json — Pawl and Event Loop local dependencies
• README.md — updated instructions, tested on Linux and macOS

Appreciate any further feedback you might have.