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Example code of claude-php/claude-php-sdk

Informations about the package claude-php-sdk

Claude PHP SDK

GitHub Stars

If this saves you time, a star on GitHub helps other PHP developers find it.

The unofficial PHP client for the Anthropic Claude API. Requires PHP 8.1+, Composer, and an Anthropic API key.

Quick start

The SDK reads ANTHROPIC_API_KEY from the environment automatically if you don't pass apiKey explicitly.

Sending messages

Streaming

For helper methods over raw events, wrap the stream in MessageStream:

See examples/streaming_comprehensive.php for all event types.

Multi-turn conversations

Tool use

Define tools with a name, description, and JSON Schema input definition. Claude calls them; your code runs them.

For automatic tool loop execution, use the built-in tool runner:

See examples/tool_use_overview.php for the full workflow.

Extended thinking

Claude can reason step-by-step before answering. Three modes are available:

Mode Behaviour When to use
disabled No internal reasoning Fast responses, simple prompts
enabled Always reasons; set budget_tokens Deep analysis, guaranteed reasoning
adaptive Model decides based on the prompt Mixed workloads, cost-conscious

See examples/adaptive_thinking.php.

Vision and documents

Pass images as base64 or by URL. Pass PDFs or files via the Files API.

See examples/files_api.php.

Batch processing

Process large numbers of requests at 50% of the standard cost, asynchronously.

See examples/batch_processing.php for the full workflow.

Structured outputs

Get guaranteed JSON that matches a schema, without prompt engineering:

See examples/structured_outputs.php.

Server-side tools

These tools are executed by Anthropic's infrastructure — no handler code needed on your side.

Code execution

Claude writes and runs sandboxed code, returning stdout, stderr, and generated files.

Use code_execution_20260120 (beta) for REPL-state persistence across multiple tool calls.

Memory tool

Persistent file-based storage that survives across conversations.

Supports view, create, str_replace, insert, delete, and rename commands.

Web fetch

Retrieve live URL content with domain restrictions and token caps.

See examples/web_fetch.php.

Models

Constant Model ID Best for
MODEL_CLAUDE_OPUS_4_6 claude-opus-4-6 Frontier reasoning, adaptive thinking
MODEL_CLAUDE_SONNET_4_6 claude-sonnet-4-6 Balanced capability and speed
MODEL_CLAUDE_SONNET_4_5 claude-sonnet-4-5-20250929 Coding, complex reasoning
MODEL_CLAUDE_HAIKU_4_5 claude-haiku-4-5-20251001 Speed and cost efficiency
MODEL_CLAUDE_3_7_SONNET_LATEST claude-3-7-sonnet-latest Hybrid reasoning
MODEL_CLAUDE_3_5_HAIKU_LATEST claude-3-5-haiku-latest Ultra-fast responses

Use *_LATEST aliases for automatic updates, or dated IDs (e.g. MODEL_CLAUDE_SONNET_4_5) for pinned deployments. See src/Types/ModelParam.php for the full list.

Client configuration

Alternative authentication

See examples/authentication_flexibility.php.

Error handling

Retries on 429 and 5xx responses happen automatically (configurable via maxRetries). See examples/error_handling.php.

Framework integration

Laravel

Install the first-party package for service provider, facade, and config publishing:

Laravel Package →

For manual registration without the package:

Symfony

Cloud platforms

Platform Class Example
Microsoft Azure AI Foundry ClaudePhp\Lib\Foundry\AnthropicFoundry examples/foundry.php
AWS Bedrock ClaudePhp\Lib\Bedrock\AnthropicBedrock —
Google Vertex AI ClaudePhp\Lib\Vertex\AnthropicVertex —

Examples and tutorials

85+ runnable examples organised by topic — streaming, vision, tool use, batching, prompt caching, context management, and more:

Highlights:

Development

Contributing

  1. Fork and clone the repo
  2. Run composer install
  3. Make your changes, add tests
  4. Ensure composer test, composer lint, and composer stan all pass
  5. Open a pull request

A note to Anthropic

This SDK was built independently by Dale Hurley to give the PHP community a first-class Claude integration — the same one the Python and TypeScript communities already enjoy. It tracks the official API closely, ships 85+ examples covering every docs page, and has a full tutorial series for building agentic systems.

If you work at Anthropic and would like to sponsor, officially adopt, or collaborate on this project, I'd love to hear from you. Reach out via GitHub Discussions or the email in my profile.

License

MIT — see LICENSE

Support

All versions of claude-php-sdk with dependencies

PHP Build Version
Package Version
Requires php Version ^8.1
psr/http-client Version ^1.0
psr/http-message Version ^1.0 || ^2.0
psr/http-factory Version ^1.1
psr/container Version ^1.1 || ^2.0
amphp/amp Version ^3.1
guzzlehttp/guzzle Version ^7.10
nyholm/psr7 Version ^1.8
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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