I built Ember while working on PHP and FrankenPHP runtime internals and debugging tricky production issues.
Ember is a small CLI tool that lets you inspect what’s happening inside the PHP runtime from within your application. The idea is to make runtime behavior easier to observe without modifying PHP itself.
It has both a TUI (for local dev or your best SSH debugging sessions) and a prod/cloud ready daemon.
You can use it to explore things like runtime state, execution context, and other internal signals while your application is running.
I hope you'll find this helpful!