mssql connection

Working great on mysql but now there is the need to build a website on a complete windows system. Windows server with PHP7 and MSSQL server.
Is there a posibility to change the DB connection from mysql into mssql.
mysqli_connect -> sqlsrv_connect, but since this the database connection is complete intergrated and difficult for a user to port to a new database.
It is not a great usergroup that uses PHP and MSSQL, but it would be nice if it would be possible with your tool.
Until my status of today this is the best package for management and usercontrol with greater users and different groups.
Waiting for your positive feedback and upgrade.

If you didn't get my other message, try replacing your classes/DB.php with this file.
http://pastebin.com/ZVR6T1hw

If that doesn't work, please remove everything in line 31 except the ;

I've never used MS SQL but there is a pretty decent chance that will patch you over.