Upgrading to Requests 2.0

Autoloading the Requests library

In Requests 1.x, both a custom autoloader native to Requests, as well as autoloading via the Composer vendor/autoload.php file was supported.

The same applies to Requests 2.x, though the way to initiate the Requests native custom autoloader has changed.

If you were autoloading the Requests library via the Composer autoload file, no changes are needed.

// OLD: Using the custom autoloader in Requests 1.x.
require_once 'path/to/Requests/library/Requests.php';

// NEW: Using the custom autoloader in Requests 2.x.
require_once 'path/to/Requests/src/Autoload.php';

For backward compatibility reasons, the Requests 1.x manner to call the autoloader will still be supported for the time being, but it is recommended to update your code to use the new autoloader.

New namespaced names

As of Requests 2.0.0, all code in the Requests library is namespaced and class/interface names have been normalized to CamelCaps.

We recommend for all users to upgrade their code to use the new namespaced class names.

Type Request 1.x name Requests >= 2.0 name
class Requests WpOrg\Requests\Requests 1
interface Requests_Auth WpOrg\Requests\Auth
interface Requests_Hooker WpOrg\Requests\HookManager
interface Requests_Transport WpOrg\Requests\Transport
interface Requests_Proxy WpOrg\Requests\Proxy
class Requests_Cookie WpOrg\Requests\Cookie
class Requests_Exception WpOrg\Requests\Exception
class Requests_Hooks WpOrg\Requests\Hooks
class Requests_IDNAEncoder WpOrg\Requests\IdnaEncoder
class Requests_IPv6 WpOrg\Requests\Ipv6
class Requests_IRI WpOrg\Requests\Iri
class Requests_Response WpOrg\Requests\Response
class Requests_Session WpOrg\Requests\Session
class Requests_SSL WpOrg\Requests\Ssl
class Requests_Auth_Basic WpOrg\Requests\Auth\Basic
class Requests_Cookie_Jar WpOrg\Requests\Cookie\Jar
class Requests_Proxy_HTTP WpOrg\Requests\Proxy\Http
class Requests_Response_Headers WpOrg\Requests\Response\Headers
class Requests_Transport_cURL WpOrg\Requests\Transport\Curl
class Requests_Transport_fsockopen WpOrg\Requests\Transport\Fsockopen
class Requests_Utility_CaseInsensitiveDictionary WpOrg\Requests\Utility\CaseInsensitiveDictionary
class Requests_Utility_FilteredIterator WpOrg\Requests\Utility\FilteredIterator
class Requests_Exception_HTTP WpOrg\Requests\Exception\Http
class Requests_Exception_Transport WpOrg\Requests\Exception\Transport
class Requests_Exception_Transport_cURL WpOrg\Requests\Exception\Transport\Curl
class Requests_Exception_HTTP_### WpOrg\Requests\Exception\Http\Status### 2
class Requests_Exception_HTTP_Unknown WpOrg\Requests\Exception\Http\StatusUnknown


1 The original Requests class has been split into two classes:

2 The ### in the HTTP Exception classes represents a three character, numeric HTTP status code. Exception classes are available for HTTP status 304 - 306, 400 - 418, 428, 429, 431, 500 - 505 and 511.

Backward compatibility layer

If for some reason, you can not yet upgrade or have to support both Requests 1.x as well as Requests >= 2.0, a backward compatibility layer is provided. This backward compatibility layer will work with both the Requests native custom autoloader, as well as when using the Composer vendor/autoload.php file.

Using the old PSR-0 names will still work, but a deprecation notice will be thrown the first time during a page load when a PSR-0 class name is referenced.

For the lifetime of Requests 2.x, the deprecation notices can be disabled by defining a global REQUESTS_SILENCE_PSR0_DEPRECATIONS constant and setting the value of this constant to true. The constant needs to be defined before the first PSR-0 class name is requested.

As of Requests 3.0, support for the constant will be removed and the deprecation notice will always be thrown.

As of Requests 4.0, the backward compatibility layer will be removed.

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