php-guzzleHow to send multiple requests with Guzzle in PHP?

Guzzle is a PHP HTTP client that makes it easy to send multiple requests. To send multiple requests with Guzzle, you can use the Pool class. The Pool class allows you to send multiple requests concurrently and process the responses as they arrive.

Example code

$client = new GuzzleHttp\Client();
$requests = [
    'req1' => $client->getAsync('http://httpbin.org/get'),
    'req2' => $client->getAsync('http://httpbin.org/get?foo=bar'),
    'req3' => $client->getAsync('http://httpbin.org/get?baz=bam')
];

$pool = new GuzzleHttp\Pool($client, $requests);
$promise = $pool->promise();
$promise->wait();

Output example

Array
(
    [req1] => GuzzleHttp\Psr7\Response Object
        (
            [reasonPhrase:GuzzleHttp\Psr7\Response:private] => OK
            [statusCode:GuzzleHttp\Psr7\Response:private] => 200
            [headers:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [Date] => Array
                        (
                            [0] => Mon, 11 May 2020 11:45:45 GMT
                        )

                    [Content-Type] => Array
                        (
                            [0] => application/json
                        )

                    [Content-Length] => Array
                        (
                            [0] => 250
                        )

                    [Connection] => Array
                        (
                            [0] => keep-alive
                        )

                    [Server] => Array
                        (
                            [0] => gunicorn/19.9.0
                        )

                )

            [headerNames:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [date] => Date
                    [content-type] => Content-Type
                    [content-length] => Content-Length
                    [connection] => Connection
                    [server] => Server
                )

            [protocol:GuzzleHttp\Psr7\Response:private] => 1.1
            [stream:GuzzleHttp\Psr7\Response:private] => GuzzleHttp\Psr7\Stream Object
                (
                    [stream:GuzzleHttp\Psr7\Stream:private] => Resource id #20
                    [size:GuzzleHttp\Psr7\Stream:private] =>
                    [seekable:GuzzleHttp\Psr7\Stream:private] => 1
                    [readable:GuzzleHttp\Psr7\Stream:private] => 1
                    [writable:GuzzleHttp\Psr7\Stream:private] => 1
                    [uri:GuzzleHttp\Psr7\Stream:private] => php://temp
                    [customMetadata:GuzzleHttp\Psr7\Stream:private] => Array
                        (
                        )

                )

        )

    [req2] => GuzzleHttp\Psr7\Response Object
        (
            [reasonPhrase:GuzzleHttp\Psr7\Response:private] => OK
            [statusCode:GuzzleHttp\Psr7\Response:private] => 200
            [headers:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [Date] => Array
                        (
                            [0] => Mon, 11 May 2020 11:45:45 GMT
                        )

                    [Content-Type] => Array
                        (
                            [0] => application/json
                        )

                    [Content-Length] => Array
                        (
                            [0] => 250
                        )

                    [Connection] => Array
                        (
                            [0] => keep-alive
                        )

                    [Server] => Array
                        (
                            [0] => gunicorn/19.9.0
                        )

                )

            [headerNames:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [date] => Date
                    [content-type] => Content-Type
                    [content-length] => Content-Length
                    [connection] => Connection
                    [server] => Server
                )

            [protocol:GuzzleHttp\Psr7\Response:private] => 1.1
            [stream:GuzzleHttp\Psr7\Response:private] => GuzzleHttp\Psr7\Stream Object
                (
                    [stream:GuzzleHttp\Psr7\Stream:private] => Resource id #21
                    [size:GuzzleHttp\Psr7\Stream:private] =>
                    [seekable:GuzzleHttp\Psr7\Stream:private] => 1
                    [readable:GuzzleHttp\Psr7\Stream:private] => 1
                    [writable:GuzzleHttp\Psr7\Stream:private] => 1
                    [uri:GuzzleHttp\Psr7\Stream:private] => php://temp
                    [customMetadata:GuzzleHttp\Psr7\Stream:private] => Array
                        (
                        )

                )

        )

    [req3] => GuzzleHttp\Psr7\Response Object
        (
            [reasonPhrase:GuzzleHttp\Psr7\Response:private] => OK
            [statusCode:GuzzleHttp\Psr7\Response:private] => 200
            [headers:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [Date] => Array
                        (
                            [0] => Mon, 11 May 2020 11:45:45 GMT
                        )

                    [Content-Type] => Array
                        (
                            [0] => application/json
                        )

                    [Content-Length] => Array
                        (
                            [0] => 250
                        )

                    [Connection] => Array
                        (
                            [0] => keep-alive
                        )

                    [Server] => Array
                        (
                            [0] => gunicorn/19.9.0
                        )

                )

            [headerNames:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [date] => Date
                    [content-type] => Content-Type
                    [content-length] => Content-Length
                    [connection] => Connection
                    [server] => Server
                )

            [protocol:GuzzleHttp\Psr7\Response:private] => 1.1
            [stream:GuzzleHttp\Psr7\Response:private] => GuzzleHttp\Psr7\Stream Object
                (
                    [stream:GuzzleHttp\Psr7\Stream:private] => Resource id #22
                    [size:GuzzleHttp\Psr7\Stream:private] =>
                    [seekable:GuzzleHttp\Psr7\Stream:private] => 1
                    [readable:GuzzleHttp\Psr7\Stream:private] => 1
                    [writable:GuzzleHttp\Psr7\Stream:private] => 1
                    [uri:GuzzleHttp\Psr7\Stream:private] => php://temp
                    [customMetadata:GuzzleHttp\Psr7\Stream:private] => Array
                        (
                        )

                )

        )

)

Code explanation

1. $client = new GuzzleHttp\Client(); - This creates a new Guzzle client.
2. $requests = [ - This creates an array of requests.
3. 'req1' => $client->getAsync('http://httpbin.org/get'), - This adds a request to the array.
4. $pool = new GuzzleHttp\Pool($client, $requests); - This creates a new Pool object with the client and requests.
5. $promise = $pool->promise(); - This creates a promise for the Pool object.
6. $promise->wait(); - This waits for the promise to be fulfilled.

Helpful links

• Guzzle Documentation

Edit this code on GitHub