I'd imagine they believe the same thing you (and I) do: Opinions about it aside, PHP isn't going anywhere. If nothing else, perhaps the target audience is Hero

I'd imagine they believe the same thing you (and I) do: Opinions about it aside, PHP isn't going anywhere. If nothing else, perhaps the target audience is Heroku users who are for whatever reason using PHP instead of their usual tech for a project. Or they're looking to edge into the FortRabbit market and just haven't gotten there with the offering yet... I'd think there are plenty of angles to work. I'm also not sure about "PHP isn't going anywhere" being a minority opinion. Even people who disparage it usually understand that its ubiquity, ease of deployment, low learning curve, etc. mean it's unlikely to leave us alone any time soon, if ever.