Move examples to server directory (#198)

* move examples to server directory

This will prepare for the client implementation in https://github.com/modelcontextprotocol/php-sdk/pull/192

* fix move bootstrap too

examples/server/client-logging/LoggingShowcaseHandlers.php

@@ -0,0 +1,81 @@
+<?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.
+ */
+
+namespace Mcp\Example\Server\ClientLogging;
+
+use Mcp\Capability\Attribute\McpTool;
+use Mcp\Capability\Logger\ClientLogger;
+use Mcp\Server\RequestContext;
+
+/**
+ * Example handlers showcasing auto-injected MCP logging capabilities.
+ *
+ * This demonstrates how handlers can receive ClientLogger automatically
+ * without any manual configuration - just declare it as a parameter!
+ */
+final class LoggingShowcaseHandlers
+{
+    /**
+     * Tool that demonstrates different logging levels.
+     *
+     * @param string $message The message to log
+     * @param string $level   The logging level (debug, info, warning, error)
+     *
+     * @return array<string, mixed>
+     */
+    #[McpTool(name: 'log_message', description: 'Demonstrates MCP logging with different levels')]
+    public function logMessage(RequestContext $context, string $message, string $level): array
+    {
+        $logger = $context->getClientLogger();
+        $logger->info('🚀 Starting log_message tool', [
+            'requested_level' => $level,
+            'message_length' => \strlen($message),
+        ]);
+
+        switch (strtolower($level)) {
+            case 'debug':
+                $logger->debug("Debug: $message", ['tool' => 'log_message']);
+                break;
+            case 'info':
+                $logger->info("Info: $message", ['tool' => 'log_message']);
+                break;
+            case 'notice':
+                $logger->notice("Notice: $message", ['tool' => 'log_message']);
+                break;
+            case 'warning':
+                $logger->warning("Warning: $message", ['tool' => 'log_message']);
+                break;
+            case 'error':
+                $logger->error("Error: $message", ['tool' => 'log_message']);
+                break;
+            case 'critical':
+                $logger->critical("Critical: $message", ['tool' => 'log_message']);
+                break;
+            case 'alert':
+                $logger->alert("Alert: $message", ['tool' => 'log_message']);
+                break;
+            case 'emergency':
+                $logger->emergency("Emergency: $message", ['tool' => 'log_message']);
+                break;
+            default:
+                $logger->warning("Unknown level '$level', defaulting to info");
+                $logger->info("Info: $message", ['tool' => 'log_message']);
+        }
+
+        $logger->debug('log_message tool completed successfully');
+
+        return [
+            'message' => "Logged message with level: $level",
+            'logged_at' => date('Y-m-d H:i:s'),
+            'level_used' => $level,
+        ];
+    }
+}

examples/server/client-logging/server.php

@@ -0,0 +1,29 @@
+#!/usr/bin/env php
+<?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_once dirname(__DIR__).'/bootstrap.php';
+chdir(__DIR__);
+
+use Mcp\Server;
+
+$server = Server::builder()
+    ->setServerInfo('Client Logging', '1.0.0', 'Demonstration of MCP logging in capability handlers.')
+    ->setContainer(container())
+    ->setLogger(logger())
+    ->setDiscovery(__DIR__)
+    ->build();
+
+$result = $server->run(transport());
+
+logger()->info('Server listener stopped gracefully.', ['result' => $result]);
+
+shutdown($result);