请求选项 。

$res = $client->request('GET', '/redirect/3', ['allow_redirects' => false]);
echo $res->getStatusCode();
// 302

$res = $client->request('GET', '/redirect/3');
echo $res->getStatusCode();
// 200

use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\UriInterface;

$onRedirect = function(
    RequestInterface $request,
    ResponseInterface $response,
    UriInterface $uri
) {
    echo 'Redirecting! ' . $request->getUri() . ' to ' . $uri . "\n";
};

$res = $client->request('GET', '/redirect/3', [
    'allow_redirects' => [
        'max'             => 10,        // allow at most 10 redirects.
        'strict'          => true,      // use "strict" RFC compliant redirects.
        'referer'         => true,      // add a Referer header
        'protocols'       => ['https'], // only allow https URLs
        'on_redirect'     => $onRedirect,
        'track_redirects' => true
    ]
]);

echo $res->getStatusCode();
// 200

echo $res->getHeaderLine('X-Guzzle-Redirect-History');
// http://first-redirect, http://second-redirect, etc...

echo $res->getHeaderLine('X-Guzzle-Redirect-Status-History');
// 301, 302, etc...

$client->request('GET', '/get', ['auth' => ['username', 'password']]);

$client->request('GET', '/get', [
    'auth' => ['username', 'password', 'digest']
]);

$client->request('GET', '/get', [
    'auth' => ['username', 'password', 'ntlm']
]);

$client->request('GET', '/', ['cert' => ['/path/server.pem', 'password']]);

$jar = new \GuzzleHttp\Cookie\CookieJar();
$client->request('GET', '/get', ['cookies' => $jar]);

// Timeout if the client fails to connect to the server in 3.14 seconds.
$client->request('GET', '/delay/5', ['connect_timeout' => 3.14]);

$client->request('GET', '/get', ['debug' => true]);

// Request gzipped data, but do not decode it while downloading
$client->request('GET', '/foo.js', [
    'headers'        => ['Accept-Encoding' => 'gzip'],
    'decode_content' => false
]);

// Pass "gzip" as the Accept-Encoding header.
$client->request('GET', '/foo.js', ['decode_content' => 'gzip']);

// Force ipv4 protocol
$client->request('GET', '/foo', ['force_ip_resolve' => 'v4']);

// Force ipv6 protocol
$client->request('GET', '/foo', ['force_ip_resolve' => 'v6']);

$client->request('POST', '/post', [
    'form_params' => [
        'foo' => 'bar',
        'baz' => ['hi', 'there!']
    ]
]);

// Set various headers on a request
$client->request('GET', '/get', [
    'headers' => [
        'User-Agent' => 'testing/1.0',
        'Accept'     => 'application/json',
        'X-Foo'      => ['Bar', 'Baz']
    ]
]);

$client = new GuzzleHttp\Client(['headers' => ['X-Foo' => 'Bar']]);

// Will send a request with the X-Foo header.
$client->request('GET', '/get');

// Sets the X-Foo header to "test", which prevents the default header
// from being applied.
$client->request('GET', '/get', ['headers' => ['X-Foo' => 'test']]);

// Will disable adding in default headers.
$client->request('GET', '/get', ['headers' => null]);

// Will not overwrite the X-Foo header because it is in the message.
use GuzzleHttp\Psr7\Request;
$request = new Request('GET', 'http://foo.com', ['X-Foo' => 'test']);
$client->send($request);

// Will overwrite the X-Foo header with the request option provided in the
// send method.
use GuzzleHttp\Psr7\Request;
$request = new Request('GET', 'http://foo.com', ['X-Foo' => 'test']);
$client->send($request, ['headers' => ['X-Foo' => 'overwrite']]);

$client->request('GET', '/status/500');
// Throws a GuzzleHttp\Exception\ServerException

$res = $client->request('GET', '/status/500', ['http_errors' => false]);
echo $res->getStatusCode();
// 500

$client->request('GET', 'https://яндекс.рф');
// яндекс.рф is translated to xn--d1acpjx3f.xn--p1ai before passing it to the handler

$res = $client->request('GET', 'https://яндекс.рф', ['idn_conversion' => false]);
// The domain part (яндекс.рф) stays unmodified

$response = $client->request('PUT', '/put', ['json' => ['foo' => 'bar']]);

use GuzzleHttp\Middleware;

// Create a middleware that echoes parts of the request.
$tapMiddleware = Middleware::tap(function ($request) {
    echo $request->getHeaderLine('Content-Type');
    // application/json
    echo $request->getBody();
    // {"foo":"bar"}
});

// The $handler variable is the handler passed in the
// options to the client constructor.
$response = $client->request('PUT', '/put', [
    'json'    => ['foo' => 'bar'],
    'handler' => $tapMiddleware($handler)
]);

use GuzzleHttp\Psr7;

$client->request('POST', '/post', [
    'multipart' => [
        [
            'name'     => 'foo',
            'contents' => 'data',
            'headers'  => ['X-Baz' => 'bar']
        ],
        [
            'name'     => 'baz',
            'contents' => Psr7\Utils::tryFopen('/path/to/file', 'r')
        ],
        [
            'name'     => 'qux',
            'contents' => Psr7\Utils::tryFopen('/path/to/file', 'r'),
            'filename' => 'custom_filename.txt'
        ],
    ]
]);

// Reject responses that are greater than 1024 bytes.
$client->request('GET', 'http://httpbin.org/stream/1024', [
    'on_headers' => function (ResponseInterface $response) {
        if ($response->getHeaderLine('Content-Length') > 1024) {
            throw new \Exception('The file is too big!');
        }
    }
]);

use GuzzleHttp\TransferStats;

$client = new GuzzleHttp\Client();

$client->request('GET', 'http://httpbin.org/stream/1024', [
    'on_stats' => function (TransferStats $stats) {
        echo $stats->getEffectiveUri() . "\n";
        echo $stats->getTransferTime() . "\n";
        var_dump($stats->getHandlerStats());

        // You must check if a response was received before using the
        // response object.
        if ($stats->hasResponse()) {
            echo $stats->getResponse()->getStatusCode();
        } else {
            // Error data is handler specific. You will need to know what
            // type of error data your handler uses before using this
            // value.
            var_dump($stats->getHandlerErrorData());
        }
    }
]);

// Send a GET request to /get?foo=bar
$result = $client->request(
    'GET',
    '/',
    [
        'progress' => function(
            $downloadTotal,
            $downloadedBytes,
            $uploadTotal,
            $uploadedBytes
        ) {
            //do something
        },
    ]
);

$client->request('GET', '/', ['proxy' => 'http://localhost:8125']);

$client->request('GET', '/', [
    'proxy' => [
        'http'  => 'http://localhost:8125', // Use this proxy with "http"
        'https' => 'http://localhost:9124', // Use this proxy with "https",
        'no' => ['.mit.edu', 'foo.com']    // Don't use a proxy with these
    ]
]);

// Send a GET request to /get?foo=bar
$client->request('GET', '/get', ['query' => ['foo' => 'bar']]);

// Send a GET request to /get?foo=bar
$client->request('GET', '/get?abc=123', ['query' => ['foo' => 'bar']]);

$response = $client->request('GET', '/stream', [
    'stream' => true,
    'read_timeout' => 10,
]);

$body = $response->getBody();

// Returns false on timeout
$data = $body->read(1024);

// Returns false on timeout
$line = fgets($body->detach());

$client->request('GET', '/stream/20', ['sink' => '/path/to/file']);

$resource = \GuzzleHttp\Psr7\Utils::tryFopen('/path/to/file', 'w');
$client->request('GET', '/stream/20', ['sink' => $resource]);

$resource = \GuzzleHttp\Psr7\Utils::tryFopen('/path/to/file', 'w');
$stream = \GuzzleHttp\Psr7\Utils::streamFor($resource);
$client->request('GET', '/stream/20', ['save_to' => $stream]);

$response = $client->request('GET', '/stream/20', ['stream' => true]);
// Read bytes off of the stream until the end of the stream is reached
$body = $response->getBody();
while (!$body->eof()) {
    echo $body->read(1024);
}

// Use the system's CA bundle (this is the default setting)
$client->request('GET', '/', ['verify' => true]);

// Use a custom SSL certificate on disk.
$client->request('GET', '/', ['verify' => '/path/to/cert.pem']);

// Disable validation entirely (don't do this!).
$client->request('GET', '/', ['verify' => false]);

// Timeout if a server does not return a response in 3.14 seconds.
$client->request('GET', '/delay/5', ['timeout' => 3.14]);
// PHP Fatal error:  Uncaught exception 'GuzzleHttp\Exception\TransferException'

// Force HTTP/1.0
$request = $client->request('GET', '/get', ['version' => 1.0]);