What's New?

PHP 5.3 namespaces

Follows PSR-0, PSR-1, and PSR-2 standards

Built on Guzzle and utilizes the Guzzle feature set

Persistent connection management for both serial and parallel requests

Event hooks (via Symfony2 EventDispatcher) for event-driven, custom behavior

Request and response entity bodies are stored in php://temp streams to reduce memory usage

Transient networking and cURL failures are automatically retried using truncated exponential backoff

Plug-ins for over-the-wire logging and response caching

"Waiter" objects that allow you to poll a resource until it is in a desired state

Resource iterator objects for easily iterating over paginated responses

Service-specific sets of exceptions

Modeled responses with a simpler interface

Grouped constants (Enums) for service parameter options

Flexible request batching system

Service builder/container that supports easy configuration and dependency injection

Full unit test suite with extensive code coverage

Composer support (including PSR-0 compliance) for installing and autoloading SDK dependencies

Phing build.xml for installing dev tools, driving testing, and producing .phar files

Powerful Amazon DynamoDB batch write system

Powerful Amazon Simple Storage Service (Amazon S3) and Amazon Glacier multipart upload system

Redesigned DynamoDB Session Handler

Improved multi-region support