This is moving a bit tangentially to the topic at hand but I love pyenv (and rbenv) for the same reason.
My question is now that I'm having to do more PHP development again: is there anything like this for PHP? Last time I looked it seems there were a couple attempts (including phpenv[0]) but that they never caught on or were abandoned.
Is there something like this for PHP? If not, any idea why not? Is phpenv so stable that it hasn't need to be touched in 5 years?