What are the potential issues with using Port 80 for a PHP server when the webserver is already running on that port?

Using Port 80 for a PHP server when the webserver is already running on that port can cause conflicts and prevent both servers from running simultaneously. To solve this issue, you can simply change the port number for the PHP server to a different port that is not already in use.

<?php

// Change the port number to a different port that is not already in use
$port = 8080;

// Create a new instance of the PHP server with the updated port number
$server = new \React\Http\Server($socket, $loop);

$server->on('request', function ($request, $response) {
    // Handle incoming requests
});

echo "PHP server running on port $port\n";

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