Swift 5.5 iOS app connected to local MySQL database

Hey everyone I've been tasked to do some back end work for my app and just looking for a little guidance or advice.

I have an app that will need to be connected to a local network only DB. No cloud services can be used. I found some useful information from Code with Chris, https://*******.com/2kfmv8vw ,but seems from the comments it might be a little outdated. I know for sure I'll be using PHP to connect the two but just wanted to see if anyone had any suggestions before I started this journey. Any help is welcome