No, it's baked in to React.

https://react.dev/reference/rsc/server-actions

Oh yep, I was thinking of “use client”

https://nextjs.org/docs/app/building-your-application/render...

That's also baked into React: https://react.dev/reference/rsc/use-client

PHP is what you should be using for server code.

You _should_ the best tool for the job.

Personally,I don’t think php or js are the right tools to build a backend for a business.

Neither are particularly friendly towards growing teams for many reasons, but the lack of strong typing is a big one.

You want your backend to have minimal complexity, that’s why go has been so popular lately

PHP has static and strong types these days and it (and its dialects) are in use by some of the largest teams on the planet

Granted I don’t know much about typing in php, but from my quick google search, it seems like they support type hints and type declarations, but the language isn’t strongly typed.

Also, to your second point, some of the largest, most critical, and most at-risk businesses on the planet (namely banks) run on COBOL, but I wouldn’t exactly describe cobol as a language that lends itself well to large orgs, it’s just entrenched. same as php and dozens of other technologies.

I admit I’ve only ever used Hack, not vanilla PHP, but that one is a pleasure to use. I’m sure the vast majority of my colleagues will agree with that too