.. title:: Guzzle | PHP HTTP client and framework for consuming RESTful web services

======
Guzzle
======

Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and
trivial to integrate with web services.

- Manages things like persistent connections, represents query strings as
  collections, simplifies sending streaming POST requests with fields and
  files, and abstracts away the underlying HTTP transport layer.
- Can send both synchronous and asynchronous requests using the same interface
  without requiring a dependency on an event loop.
- Pluggable HTTP adapters allows Guzzle to integrate with any method you choose
  for sending HTTP requests over the wire (e.g., cURL, sockets, PHP's stream
  wrapper, non-blocking event loops like `React <http://reactphp.org/>`_, etc.).
- Guzzle makes it so that you no longer need to fool around with cURL options,
  stream contexts, or sockets.

.. code-block:: php

    $client = new GuzzleHttp\Client();
    $response = $client->get('http://guzzlephp.org');
    $res = $client->get('https://api.github.com/user', ['auth' =>  ['user', 'pass']]);
    echo $res->getStatusCode();
    // "200"
    echo $res->getHeader('content-type');
    // 'application/json; charset=utf8'
    echo $res->getBody();
    // {"type":"User"...'
    var_export($res->json());
    // Outputs the JSON decoded data

    // Send an asynchronous request.
    $req = $client->createRequest('GET', 'http://httpbin.org', ['future' => true]);
    $client->send($req)->then(function ($response) {
        echo 'I completed! ' . $response;
    });

User guide
----------

.. toctree::
    :maxdepth: 2

    overview
    quickstart
    clients
    http-messages
    events
    streams
    adapters
    testing
    faq

HTTP Components
---------------

There are a number of optional libraries you can use along with Guzzle's HTTP
layer to add capabilities to the client.

`Log Subscriber <https://github.com/guzzle/log-subscriber>`_
    Logs HTTP requests and responses sent over the wire using customizable
    log message templates.

`OAuth Subscriber <https://github.com/guzzle/oauth-subscriber>`_
    Signs requests using OAuth 1.0.

`Cache Subscriber <https://github.com/guzzle/cache-subscriber>`_
    Implements a private transparent proxy cache that caches HTTP responses.

`Retry Subscriber <https://github.com/guzzle/retry-subscriber>`_
    Retries failed requests using customizable retry strategies (e.g., retry
    based on response status code, cURL error codes, etc.)

`Message Integrity Subscriber <https://github.com/guzzle/message-integrity-subscriber>`_
    Verifies the message integrity of HTTP responses using customizable
    validators. This plugin can be used, for example, to verify the Content-MD5
    headers of responses.

Service Description Commands
----------------------------

You can use the **Guzzle Command** library to encapsulate interaction with a
web service using command objects. Building on top of Guzzle's command
abstraction allows you to easily implement things like service description that
can be used to serialize requests and parse responses using a meta-description
of a web service.

`Guzzle Command <https://github.com/guzzle/command>`_
    Provides the foundational elements used to build high-level, command based,
    web service clients with Guzzle.

`Guzzle Services <https://github.com/guzzle/guzzle-services>`_
    Provides an implementation of the *Guzzle Command* library that uses
    Guzzle service descriptions to describe web services, serialize requests,
    and parse responses into easy to use model structures.