Symfony, in the browser

The frame is a Symfony 8 application: a guestbook, with Doctrine and SQLite, Twig, forms and a session. PHP, compiled to WebAssembly, runs it in this page: no server runs it.

Try it: sign the guestbook, then reload the page. Your message is still here, and the form remembers your name: it is in the session.

Loading PHP…

Or without the frame: the same application, on its own page, with its URLs in the address bar. PHP runs in the service worker there.

How it works

• The stack of the page, in stack.php, embeds the application, app/, at /app: its vendor/ too, and the cache of Symfony, made when it is built. opcache compiles the files as they run.
• serveInFrame() starts a service worker, sw.js, that hands what the frame asks for to this page, that runs php.request() in a Web Worker (createPhpInWorker()): the page does not freeze.
• The database and the sessions are in /symfony, that PHP keeps in IndexedDB. The page keeps the cookies.