Yeah, I've used both MySQL and Postgres in the same app before (legacy transition/migration). There is no issue with Postgres in PHP, and it works just fine with, e.g., PDO.
Walker from Teespring here. Wanted to jump in and say I was also confused by this, and Evan is on a well-deserved vacation right now so he's not around to clarify.
This was a real-time interview, and I was the one who edited for grammar because Evan had already left. I'm assuming this didn't come out the way he intended it to. I can't imagine (though I could be wrong I suppose) he is under the impression Postgres doesn't work with PHP.
Right on. I didn't imagine that anyone as evidently technically savvy as Evan didn't understand it -- I just wanted to put out the confirmation that PHP and Postgres (in the general case, maybe not at Heroku) work fine together for casual readers.
This limitation (of Heroku's?) is fairly interesting to me. I'm curious as to why (perhaps there just isn't enough demand for Postgres/PHP apps in their experience so they haven't developed support for it?).
This was a real-time interview, and I was the one who edited for grammar because Evan had already left. I'm assuming this didn't come out the way he intended it to. I can't imagine (though I could be wrong I suppose) he is under the impression Postgres doesn't work with PHP.
When he gets back I'll have him chime in!