This software uses function split() which was deprecated already in PHP 5.6 and removed in 7.0.
While a newer version of FlySpray (1.0) is in beta, the one we have in ports (0.9.9.7) needs something like PHP_VER=56 in the Makefile to run.
That's however not enough, since devel/flyspray requires databases/adodb, which needs the same treat (unless it becomes flavorized one day).
According to FreshPorts, devel/flyspray is the only consumer of databases/adodb.
Created attachment 202089 [details]
Use databases/adodb5 instead of databases/adodb
Upon further investigation, FlySpray itself can work with PHP 7.2 (albeit with some warnings).
The real problem is its dependency databases/adodb, which is stuck at PHP 5.
However FlySpray works fine with (the newer) databases/adodb5.