I thought php has a per request execution model.
I thought php has a per request execution model.
Hell, in PHP 5 era and before, it even HAD to, PHP had been designed as "you get a brand new process every request" and so a lot of things with memory went wrong if you ran for too long.
This changed with PHP 7, some framework appeared to allow an event based system, and then PHP 8 (or a later minor update) added fibers to the core to support it more easily.
These day, event based php has several well supported frameworks, is stable and fast, and allows you to have the same codebase on your websocket or other event system as you use on the rest of your app (sharing libraries is super cool, using the same DTO on the sender and receiver also, etc ...)
If only there were a language that was as universally deployed and well supported and extremely optimized on both server AND client, and had all of the capabilities of PHP and many more...
Because today, using an anisomorphic language that can't run on both sides is like riding a bicycle with only one leg.
Javascript's ecosystem is not anywhere that yet.
If it's a stable environment that runs old code you want, then if I had my way we'd all be programming interactive distributed network extensible web apps in PostScript instead of JavaScript, and that language has been stagnant for a much longer time than PHP has ever existed (13 years before PHP 1.0 was released in 1995), since you can still print and view all of your old PostScript documents from 1982, 42 years ago.
HyperMedia browser with embedded "applets" in PostScript:
https://donhopkins.medium.com/hyperties-discussions-from-hac...
HyperCard-like GUI builder and SimCity in PostScript:
https://donhopkins.medium.com/hyperlook-nee-hypernews-nee-go...
Visual programming language in PostScript:
https://donhopkins.medium.com/the-shape-of-psiber-space-octo...
Owen Densmore's description of John Warnock's "Linguistic Motherboard":
https://news.ycombinator.com/item?id=29295116
Owen Densmore's object oriented PostScript programming system:
https://news.ycombinator.com/item?id=18696116
Brian Reid's history of JaM, Interpress, and PostScript:
https://news.ycombinator.com/item?id=37202149
PostScript's relation to Forth, Lisp, and Smalltalk:
https://news.ycombinator.com/item?id=21968175
PostScript's relation to PDF:
https://news.ycombinator.com/item?id=37202149
Alan Kay on "Should web browsers have stuck to being document viewers?" and a discussion of Smalltalk, HyperCard, NeWS, and HyperLook:
https://donhopkins.medium.com/alan-kay-on-should-web-browser...
And you're confusing stagnant with not breaking backward compatibility and / or the entire ecosystem not changing every couple of years.
This sounds like an obfuscated way of saying that JavaScript is the only worthwhile language.
Of course you could choose to run a WASM PHP interpreter in the browser, but you be you.
Or you could petition all the browser vendors to support PHP directly. Get back to me on that when you've sorted it all out and resolved all the political and technological and economic issues, and also implemented a better framework than SvelteKit with it.