Whoops, just realized I had mixed pop vs. shift in my head. Pop from the end, shift from the beginning... right? Fixing my Arr::pop() & implementing Arr::shift() to fix.
It kinda works, but it seems stderr is getting swallowed by PHP. Gonna have to lookup how to command PHP otherwise (or otherwise find what I'm doing wrong). The things I've done to make this work... are AWESOME! 😂