PHP SDK for Windows Azure is the result of an open source development project by RealDolmen, for which Microsoft is providing funding. The goal of the SDK is to provide high-level abstractions that enable PHP developers to interoperate readily with Windows Azure. The PHP SDK for Windows Azure focuses on REST and provides the following core features:
PHP classes for Windows Azure blobs, tables & queues; Helper Classes for HTTP transport, AuthN/AuthZ, REST & error management; Manageability, instrumentation & logging support, revealed Vijay Rajagopalan.
Download: PHP SDK for Windows Azure