These functions allow you to access MS SQL Server database. This extension is not available anymore on Windows with PHP 5.3 or later. SQLSRV, an alternative extension for MS SQL connectivity is available from Microsoft: » http://msdn.microsoft.com/en-us/sqlserver/ff657782.aspx. Alternatively to use the mssql functions in Windows, use php_dblib.dll (FreeTDS) http://www.freetds.org/ e.g. php.ini setting extension=php_dblib.dll php_dblib.dll (FreeTDS) use ':' as the delimiter in all installations.