http-factories.md

layout	language	version	title
default	en	4.0	HTTP Factories (PSR-17)

HTTP Factories (PSR-17)

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Overview

Phalcon\Http\Message\RequestFactory, Phalcon\Http\Message\ResponseFactory, Phalcon\Http\Message\ServerRequestFactory, Phalcon\Http\Message\StreamFactory, Phalcon\Http\Message\UploadedFileFactory, Phalcon\Http\Message\UriFactory are the factories implemented of the PSR-17 HTTP messaging interface factories as defined by PHP-FIG.

These components aid in creating HTTP objects as defined by the PSR-7 standard.

RequestFactory

The Phalcon\Http\Message\RequestFactory can be used to create Phalcon\Http\Message\Request objects.

<?php

use Phalcon\Http\Message\RequestFactory;

$factory = new RequestFactory();

$stream = $factory->createRequest(
    'GET', 
    'https://api.phalcon.io/companies/1'
);

The createRequest() method accepts a string as the method (GET, POST etc.) and the URI and returns back the request object.

ResponseFactory

The Phalcon\Http\Message\ResponseFactory can be used to create Phalcon\Http\Message\Response objects.

<?php

use Phalcon\Http\Message\ResponseFactory;

$factory = new ResponseFactory();

$stream = $factory->createResponse(200, 'OK');

The createResponse() method accepts an integer which is the response status as well as a string, representing the reason phrase. If no reason is specified, the component will use the default ones as suggested by the HTTP RFCs.

ServerRequestFactory

The Phalcon\Http\Message\ServerRequestFactory can be used to create Phalcon\Http\Message\ServerRequest objects.

<?php

use Phalcon\Http\Message\ServerRequestFactory;

$factory = new ServerRequestFactory();

$request = $factory->createServerRequest(
    'GET', 
    'https://api.phalcon.io/companies/1',
    [
        'param' => 'value'
    ]
);

The createServerRequest() creates the new object using a method (GET, POST etc.), a URI and optionally an array of SAPI parameters with which to seed the generated request instance.

In addition to the createServerRequest() the factory offers the load() method as a helper to create a request by populating it from the superglobals.

<?php

use Phalcon\Http\Message\ServerRequestFactory;

$factory = new ServerRequestFactory();

$request = $factory->load(
    $_SERVER,
    $_GET,
    $_POST,
    $_COOKIE,
    $_FILES
);

If If any argument is not supplied, the corresponding superglobal will be used.

StreamFactory

The Phalcon\Http\Message\StreamFactory can be used to create Phalcon\Http\Message\Stream objects.

<?php

use Phalcon\Http\Message\StreamFactory;

$factory = new StreamFactory();

$stream = $factory->createStream('stream contents');

UploadedFileFactory

The Phalcon\Http\Message\UploadedFileFactory can be used to create Phalcon\Http\Message\UploadedFile objects.

<?php

use Phalcon\Http\Message\StreamFactory;
use Phalcon\Http\Message\UploadedFileFactory;

$factory = new UploadedFileFactory();
$streamFactory = new StreamFactory();

$stream = $streamFactory->createStream('stream contents');

$size            = 12345;
$error           = 0;
$clientFilename  = null;
$clientMediaType = null;

$file = $factory->createUploadedFile(
    $stream,
    $size,
    $error,
    $clientFilename,
    $clientMediaType
);

If a size is not provided it will be determined by checking the size of the stream. The $error is the PHP file upload error, It defaults to 0. If provided by the client, you can use the clientFilename and clientMediaType. Otherwise they can be set to null.

UriFactory

The Phalcon\Http\Message\UriFactory can be used to create Phalcon\Http\Message\Uri objects.

<?php

use Phalcon\Http\Message\UriFactory;

$factory = new UriFactory();

$uri = $factory->createUri('https://api.phalcon.io/companies/1');