I upgraded my 3.24 installation to 3.31, but on loading the admin page received the notice that “Mysql is not supported in your PHP”. That’s obviously not true, because 3.24 was configured to use Mysql instead of Mysqli, because it is Mysqli that is not supported in my PHP. I confirmed that 3.31 was also configured to use Mysql, but it turns out that PHPlist’s mysql.inc file now simply loads mysqli.inc. And it turns out to have been doing so since v3.25.
Question: Can I use the mysql.inc file from v3.24 in later versions?