Microsoft has released a community technology preview of their SQL Server Driver for PHP 2.0
Download the SQL Server Driver for PHP 2.0 CTP2 to enable a PHP application to use the PDO (PHP Data Objects) API or the SQLSRV Native API for using SQL Server for data storage.SQL Server Driver for PHP 2.0 CTP2 – June 2010
Refer to the documentation that is installed with the driver for a description of the new features in this release. The SQL Server Driver for PHP v2.0 CTP2 download is available to all SQL Server users at no additional charge. The SQL Server Driver for PHP is a PHP 5 extension that allows for the reading and writing of SQL Server data from within PHP scripts. The extension provides a native procedural and PDO interfaces for accessing data in all editions of SQL Server 2005 and later including SQL Azure.
CTP2 contains a new version of the SQLSRV driver, a few design changes to PDO_SQLSRV driver, and bug fixes. Visit our blog for more details.