fix code style

Adding Windows Authentication compatibility according to http://php.net/manual/en/function.sqlsrv-connect.php
"By default, the connection is attempted using Windows Authentication. To connect using SQL Server Authentication, include "UID" and "PWD" in the connection options array."

Fixes #2953.

Allows result sets to be iterated over without running out of memory on
large data sets.

Fix PSR2 rules : "As per PSR2, the static declaration should come after the visibility declaration."

As seen here => http://technet.microsoft.com/en-us/library/cc626307(v=sql.105).aspx