SQL Server 2005/2008 driver for PHP
If you are into writing PHP websites, you should know that you can use Microsoft SQL Server 2005 or 2008 as your relational database server directly from PHP by installing a specific driver (527KB) provided by Microsoft at no additional cost. This driver installs as a PHP 5 extension. If you want to take a quick look at the APIs it provides without having to download it, here is the list of 24 functions it exposes. If you need help using these functions, there is also a dedicated forum to look for help from peers and MSFT guys.