The SQL Server Driver for PHP is a PHP 5 extension that provides data access to SQL Server 2005 and SQL Server 2008. The extension provides a procedural interface for accessing data in all versions (including Express) of SQL Server 2005 and SQL Server 2008. The SQL Server Driver for PHP API includes support for Windows Authentication, transactions, parameter binding, streaming, metadata access, and error handling.

To use the SQL Server Driver for PHP, you must have SQL Server Native Client installed on the same computer on which PHP is running. For more information, see System Requirements (SQL Server Driver for PHP).