This is a bummer. I have a lot of references to this in my code.
The deprecation notice gives alternatives: [php.net...]
I will admit, I don't fully understand the options offered (I don't have a lot of experience with MySQL outside of coding php applications -- everything was set up on my dedicated server by cpanel/the host). Can anyone offer any tips for how I can update the server/codes to use non-deprecated functions for MySQL?