README

Caridea is a miniscule PHP application library. This shrimpy fellow is what you'd use when you just want some helping hands and not a full-blown framework.

This is its HTTP component. It includes small utilities for working with PSR-7 HTTP requests and responses, including:

• An implementation of RFC 7807, "Problem Details for HTTP APIs".
• A utility to parse common pagination parameters from the request
• A utility to correctly parse query strings with multiple parameters having the same name
• A utility to determine a client's preferred accepted MIME type

Installation

You can install this library using Composer:

$ composer require caridea/http

• The master branch (version 3.x) of this project requires PHP 7.1 and depends on psr/http-message.
• Version 2.x of this project requires PHP 7.0 and depends on psr/http-message.
• Version 1.x of this project requires PHP 5.5 and depends on psr/http-message.

Compliance

Releases of this library will conform to Semantic Versioning.

Our code is intended to comply with PSR-1, PSR-2, and PSR-4. If you find any issues related to standards compliance, please send a pull request!

Documentation

• Head over to Read the Docs

Examples

Just a few quick examples.

Problem Details

We included an implementation of RFC 7807 that you can serialize to JSON or append to a PSR-7 HTTP Response.

use Caridea\Http\ProblemDetails;
use Zend\Diactoros\Uri;

$problem = new ProblemDetails(
    new Uri('http://example.com/problem/oops'),  // type
    'A weird thing happened',                    // title
    500,                                         // status
    'It looks like the server has goofed again', // detail
    new Uri('http://example.com/problems/1f9a'), // instance
    [                                            // extensions
        'server' => 'workerbee01.example.com',
        'auth' => 'foobar'
    ]
);
echo json_encode($problem);

Pagination Factory

use Zend\Diactoros\ServerRequestFactory;

$request = ServerRequestFactory::fromGlobals(
    $_SERVER,
    \Caridea\Http\QueryParams::getFromServer(), // instead of $_GET
);

$factory = new \Caridea\Http\PaginationFactory();

// say the Query was ?count=25&startIndex=1&sort=%2Bfoo&sort-bar
// or maybe          ?count=25&start=0&sort=%2Bfoo,-bar
// or one of many other formats for this type of pagination settingns
$pagination = $factory->create($request, 'sort');
$pagination->getMax();    // 25
$pagination->getOffset(); // 0
$pagination->getOrder();  // ['foo' => true, 'bar' => false]

Accept Types

// say the HTTP_ACCEPT field is text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
$types = new \Caridea\Http\AcceptTypes($_SERVER);
$types->preferred(['application/xml', 'application/json']); // returns application/xml

Helper Traits

Two traits are now available, JsonHelper and MessageHelper. These can be used by controller classes or dispatcher middleware.

Third-Party

The traits JsonHelper and MessageHelper (as well as their unit tests) were ported to PHP from the Labrys library under a compatible Apache 2.0 license.