Adopt server examples

examples/09-standalone-cli/index.php

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+<?php
+
+/*
+ * This file is part of the official PHP MCP SDK.
+ *
+ * A collaboration between Symfony and the PHP Foundation.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+require __DIR__.'/vendor/autoload.php';
+
+use Symfony\Component\Console as SymfonyConsole;
+use Symfony\Component\Console\Output\OutputInterface;
+
+$debug = (bool) ($_SERVER['DEBUG'] ?? false);
+
+// Setup input, output and logger
+$output = new SymfonyConsole\Output\ConsoleOutput($debug ? OutputInterface::VERBOSITY_VERY_VERBOSE : OutputInterface::VERBOSITY_NORMAL);
+$logger = new SymfonyConsole\Logger\ConsoleLogger($output);
+
+// Configure the JsonRpcHandler and build the functionality
+$jsonRpcHandler = new Mcp\JsonRpc\Handler(
+    Mcp\JsonRpc\MessageFactory::make(),
+    App\Builder::buildMethodHandlers(),
+    $logger
+);
+
+// Set up the server
+$sever = new Mcp\Server($jsonRpcHandler, $logger);
+
+// Create the transport layer using Stdio
+$transport = new Mcp\Server\Transport\StdioTransport(logger: $logger);
+
+// Start our application
+$sever->connect($transport);