php-sdk/examples/client/http_discovery_calculator.php
Kyrian Obikwelu 3ef864c444
[Client] Feat: Implement MCP client component (#192)
* feat(client): add complete MCP client SDK with STDIO and HTTP transports

Add Client, Builder, ClientProtocol, ClientSession, and transport
implementations for communicating with MCP servers. Supports tools, resources, prompts, and real-time progress/logging notifications.

* refactor(examples): reorganize examples into server/ and client/ folders

* feat: add SamplingRequestHandler for handling server sampling requests

* feat: add setLoggingLevel method to control server logging verbosity

* refactor: make progress token dependent on request ID

* docs: Update server IP in usage instructions and add notes on sampling server requirements.

* feat: add complete() method for completion/complete requests

* refactor: properly parse and type initialize result

* refactor: standardize method names

* fix: revert changes to server related components

* fix: revert changes to server related components

* refactor: Restructure client transports and handlers into dedicated namespaces.

* fix: cs and php-stan errors fixes(partial)

* feat: Refactor request handlers to return `Response` or `Error` objects directly, adding a `SamplingException` and error logging for sampling requests.

* feat: Replace `ClientTransportInterface` with `TransportInterface` and move response result deserialization to client methods.

* refactor: remove redundant timeout check for intialize on transports

The processFiber that executes per tick while fiber is suspended already handles timeouts while waiting

* feat: broaden symfony/http-client dependency to support Symfony 5.4 to 8.0

* Update examples/client/README.md

Co-authored-by: Christopher Hertel <mail@christopher-hertel.de>

* Update examples/client/README.md

Co-authored-by: Christopher Hertel <mail@christopher-hertel.de>

* refactor: remove outgoing message queue from session and simplify transport send method to directly dispatch messages.

* refactor: Replace ClientSession with ClientState for clearer intent on runtime state management

* refactor: rename connectAndInitialize to connect for consistency

* chore: cs fix

* chore: use SamplingCallbackInterface instead of a closure for sampling request handler

---------

Co-authored-by: Christopher Hertel <mail@christopher-hertel.de>
2026-03-10 17:22:40 +01:00

77 lines
2.1 KiB
PHP

<?php
/**
* HTTP Client Example.
*
* This example demonstrates how to use the MCP client with an HTTP transport
* to communicate with a remote MCP server over HTTP.
*
* Usage: php examples/client/http_discovery_calculator.php
*
* Before running, start an HTTP MCP server:
* php -S localhost:8080 examples/server/http-discovery-calculator/server.php
*/
declare(strict_types=1);
/*
* 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 __DIR__.'/../../vendor/autoload.php';
use Mcp\Client;
use Mcp\Client\Transport\HttpTransport;
$endpoint = 'http://localhost:8000';
$client = Client::builder()
->setClientInfo('HTTP Example Client', '1.0.0')
->setInitTimeout(30)
->setRequestTimeout(60)
->build();
$transport = new HttpTransport($endpoint);
try {
echo "Connecting to MCP server at {$endpoint}...\n";
$client->connect($transport);
echo "Connected! Server info:\n";
$serverInfo = $client->getServerInfo();
echo ' Name: '.($serverInfo->name ?? 'unknown')."\n";
echo ' Version: '.($serverInfo->version ?? 'unknown')."\n\n";
echo "Available tools:\n";
$toolsResult = $client->listTools();
foreach ($toolsResult->tools as $tool) {
echo " - {$tool->name}: {$tool->description}\n";
}
echo "\n";
echo "Available resources:\n";
$resourcesResult = $client->listResources();
foreach ($resourcesResult->resources as $resource) {
echo " - {$resource->uri}: {$resource->name}\n";
}
echo "\n";
echo "Available prompts:\n";
$promptsResult = $client->listPrompts();
foreach ($promptsResult->prompts as $prompt) {
echo " - {$prompt->name}: {$prompt->description}\n";
}
echo "\n";
} catch (Throwable $e) {
echo "Error: {$e->getMessage()}\n";
echo $e->getTraceAsString()."\n";
} finally {
echo "Disconnecting...\n";
$client->disconnect();
echo "Done.\n";
}