PHP OpenSwoole Server with query parameters and global scope example.

index.php

<?php

use Swoole\Http\Request;
use Swoole\Http\Response;
use Swoole\Http\Server;

$user = 'World';

$server = new Server("0.0.0.0", 8003);

$server->on("start", function (Server $server) {
    echo "HTTP Server ready at http://127.0.0.1:8003" . PHP_EOL;
});

$server->on('request', function (Request $request, Response $response) use (&$user) {
    $params = [];

    if (isset($request->server['query_string'])) {
        parse_str($request->server['query_string'], $params);
    }

    if (isset($params['name'])) {
        $user = $params['name'];
    }

    $response->end('<h1>Hello ' . $user . '!</h1>');
});

$server->start();