The latest version was released in November 2018, and has support for PostgreSQL up to 11.x.
I'd like to see it resurrected, too!
7.12.1 was released on 12 December 2019.
Here is a very old ebuild that is at least pointing at github. I don't know if this will help someone in creating a new one:
I'm not opposed to reintroducing this.
Someone has to step up to refresh the ebuild. I don't have the time to do it.
After more 8 months, no one has volunteered to resurrect this package. phppgadmin will remain dead. This bug should remain closed until an ebuild is attached.
In the meantime, we have pgAdmin4 in the tree.