USE_PHP=mysql no longer works with PHP 7.x. USE_PHP=mysqli might work as a replacement though.
FYI, I no longer use Stikked, mostly because it 'adjusts' the paste on the way into the database (i.e. what you paste is not what is stored in the db). I spoke with upstream about adjusting that with a tunable and provided a patch. It was not taken up: https://github.com/claudehohl/Stikked/issues/469 I will be able to work on this soon (but perhaps not until June). If anyone else wishes to do this work in the meantime, please feel free. I am also happy to hand over maintainer of this port to someone else. Thank you.
(In reply to Dan Langille from comment #1) Ok, I'll mark the MYSQL option broken until then so that we can finish bug #235942.
A commit references this bug: Author: tobik Date: Fri May 24 12:23:36 UTC 2019 New revision: 502457 URL: https://svnweb.freebsd.org/changeset/ports/502457 Log: www/Stikked: Mark MYSQL option as broken USE_PHP=mysql no longer works. PR: 238101 Changes: head/www/Stikked/Makefile
I am ready to abandon this port. I no longer use it.
Original problem has been fixed.