Does anyone have any info on this. I have looked around and do not see any clarification. If I change it in the Joomla Global Config do I have to change it somewhere else too? Like in some config file code?
Specifically the SP Upgrade Joomla extension is recommending this as well. Very strange there is such a small amount of documentation about this.
From the Joomla Forum:
Both are interfaces for PHP to access a MySQL database. MySQLi is faster and potentially more secure, you should use it when available.