Guzzle is a PHP HTTP client library

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

  • Simple interface for building query strings, POST requests, streaming large uploads, streaming large downloads, using HTTP cookies, uploading JSON data, etc...
  • Can send both synchronous and asynchronous requests using the same interface.
  • Uses PSR-7 interfaces for requests, responses, and streams. This allows you to utilize other PSR-7 compatible libraries with Guzzle.
  • Abstracts away the underlying HTTP transport, allowing you to write environment and transport agnostic code; i.e., no hard dependency on cURL, PHP streams, sockets, or non-blocking event loops.
  • Middleware system allows you to augment and compose client behavior.
$client = new GuzzleHttp\Client();
$res = $client->request('GET', '', [
    'auth' => ['user', 'pass']
echo $res->getStatusCode();
// 200
echo $res->getHeader('content-type');
// 'application/json; charset=utf8'
echo $res->getBody();
// {"type":"User"...'

// Send an asynchronous request.
$request = new \GuzzleHttp\Psr7\Request('GET', '');
$promise = $client->sendAsync($request)->then(function ($response) {
    echo 'I completed! ' . $response->getBody();

Help and docs

Installing Guzzle

The recommended way to install Guzzle is through Composer.

# Install Composer
curl -sS | php

Next, run the Composer command to install the latest stable version of Guzzle:

composer.phar require guzzlehttp/guzzle

After installing, you need to require Composer's autoloader:

require 'vendor/autoload.php';

You can then later update Guzzle using composer:

composer.phar update

Version Guidance

Version Status Packagist Namespace Repo Docs PSR-7
3.x EOL guzzle/guzzle Guzzle v3 v3 No
4.x EOL guzzlehttp/guzzle GuzzleHttp N/A N/A No
5.x Maintained guzzlehttp/guzzle GuzzleHttp v5 v5 No
6.x Latest guzzlehttp/guzzle GuzzleHttp v6 v6 Yes