The PDO class contains methods that allow your PHP application to connect to an SQL Server instance.
PDO {}
The PDO class contains the following methods:
PDO::__construct
PDO::beginTransaction
PDO::commit
PDO::errorCode
PDO::errorInfo
PDO::exec
PDO::getAttribute
PDO::getAvailableDrivers
PDO::lastInsertId
PDO::prepare
PDO::query
PDO::quote
PDO::rollback
PDO::setAttribute
Support for PDO was added in version 2.0 of the Microsoft Drivers for PHP for SQL Server.