[split] MS SQL server driver?

Thanks for the responses (and for taking me seriously even though I mentioned MS SQL )

I can confirm that I've managed to get my CI3 application connecting to the MS SQL server again by changing the following entries in my database.php

'dsn' => "DRIVER={ODBC Driver 13 for SQL Server};SERVER=192.168.1.23;DATABASE=MSSQLDBName"
'dbdriver' => 'odbc'

I also installed the ODBC driver as per this link https://msdn.microsoft.com/en-us/library....110).aspx  (which was a bit painful as I didn't understand what was needed initially - but in hindsight it's actually quite straightforward)

Now I am VERY new to CI and really only beginner level with PHP so before I realised the above changes were all I needed to make it work, I went about editing the mssql_driver.php in system/database/drivers/mssql (don't shoot me, I was desperate and I knew it was the wrong way of fixing it, even temporarily) - but my final result worked and was pretty close to the odbc_driver.php file (which I then found while looking around the files)

So maybe there's still hope.

As for helping with testing, I am sure there are more experienced people who would be better at this, but I'd be willing to help if you think I'd be of any use.