I've posted a question earlier which was downvoted without any comments.
From the FAQ, the question seems to be exactly the kind of questions that are on-topic. I've even mentioned the "specific requirements" as https://softwarerecs.stackexchange.com/tour so suggests.
Is "Is there a tool to convert PHP from higher version to lower version" on-topic?
If not, how should it be edited to be on-topic? Specifically, what is this site looking for for it to be on-topic?
$foo = bar()[1]
). I cannot see anything wrong with it. I also often wish downvoters were forced to leave a reason (and be it something multiple-choice, so we had an indicator at least)...