I used to be able to installphp8-pecl-zmq from alpine edge/testing repository but the build now fails with "php8-pecl-zmq (no such package):".
It seems that only one architecture remains;riscv64.
https://pkgs.alpinelinux.org/packages?name=php8-pecl-zmq&branch=edge&repo=&arch=&maintainer=
Can we get x86_64 back?