Guzzle 使用文档

一、简介

Guzzle 是一个知名度很高的 HTTP 客户端库，有以下特性：

1. 支持异步请求
2. 支持并发请求
3. 遵循PSR-7标准
4. 不依赖 curl 扩展

二、安装 

// 安装指定版本
composer require guzzlehttp/guzzle:7.7.0

// 安装最新版本
composer require guzzlehttp/guzzle

三、使用方式 

1. 发起 Get 请求

use GuzzleHttp\Client as guzzleClient;$guzzleClient = new guzzleClient(['timeout' => 2.0
]);// 同步请求方式
$response = $guzzleClient->get('http://api.org/get', ['headers' => ['User-Agent' => 'Guzzle'], 'http_errors' => false]
);
$code = $response->getStatusCode();
$body = $response->getBody();
$content = $body->getContents();// 异步请求方式
$promise = $guzzleClient->getAsync('http://api.org/get');
$promise->then(function (ResponseInterface $res) {echo $res->getStatusCode() . "\n";},function (RequestException $e) {echo $e->getMessage() . "\n";echo $e->getRequest()->getMethod();}
);

2. 发起 Post 请求

use GuzzleHttp\Client as guzzleClient;$guzzleClient = new guzzleClient(['timeout' => 2.0
]);// 原始类型
$response = $guzzleClient->post('http://api.org/post', ['body' => 'raw data'
]);// json 类型 application/json
$response = $guzzleClient->post('http://api.org/post', ['json' => ['name' => 'admin']
]);// 表单类型 application/x-www-form-urlencoded
$response = $guzzleClient->post('http://api.org/post', ['form_params' => ['username' => 'abc','password' => '123']
]);// 上传文件 multipart/form-data
$response = $guzzleClient->post('http://api.org/post', ['multipart' => [['name'     => 'user','contents' => 'admin'],['name'     => 'file','contents' => fopen('/path/to/file', 'r')],]
]);$code = $response->getStatusCode();
$body = $response->getBody();
$content = $body->getContents();
// $content = $response->getBody()->getContents();

 3. 并发请求

use GuzzleHttp\Pool;
use GuzzleHttp\Client;
use GuzzleHttp\Psr7\Request;require 'vendor/autoload.php';$client = new Client();$requests = function () {$urls = ['https://ip.taobao.com/ipSearch?ipAddr=1.2.3.4','https://www.baidu.com','https://www.taobao.com',];foreach ($urls as $u) {yield new Request('GET', $u);}
};$pool = new Pool($client, $requests(), ['concurrency' => 3,'fulfilled' => function ($response, $index) {// 请求成功$content = $response->getBody()->getContents();switch ($index) {case 0:echo "淘宝IP: ", $content, "\n";break;case 1:echo "百度首页: ", $content, "\n";break;case 2:echo "淘宝首页: ", $content, "\n";break;default:# code...break;}},'rejected' => function ($reason, $index) {// 请求失败},
]);$promise = $pool->promise();$promise->wait();

 4. 使用 Cookie

$client = new \GuzzleHttp\Client(['cookies' => true]);
$response = $client->request('GET', 'http://httpbin.org/cookies');

5. 使用代理

// Win 
set HTTP_PROXY=http://127.0.0.1:1080
set HTTPS_PROXY=http://127.0.0.1:1080

// Linux 
export HTTP_PROXY=http://127.0.0.1:1080
export HTTPS_PROXY=http://127.0.0.1:1080

use GuzzleHttp\Client as guzzleClient;$guzzleClient = new guzzleClient();
$response = $guzzleClient->get('http://api.org/get');
$content = $response->getBody()->getContents();// $client->request('GET', '/', ['proxy' => 'tcp://localhost:8125']);

6. 错误处理 。GuzzleHttp请求第三方https接口报错

错误提示:
     cURL error 60: Peer's certificate issuer has been marked as not trusted by the user. (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)

 解决方法

1. $client = new \GuzzleHttp\Client(['verify' => false]);

2. $client->setDefaultOption('verify', false);

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