[chuckadams]

Or FrankenPHP, or hell, there's still even good old Apache. Or avoid the SAPI interface entirely with servers in PHP like Workerman, AMPHP, or Swoole. FPM is entirely too fussy for me to bother with: its error handling is atrocious (restarting in an infinite loop with no backoff is common), and no one really knows how to tune it.

[Gormo]

Those are great solutions for production deployment, but to the previous commenter's point, for iterating on your local machine during development work, nothing beats just running `php -S`.

Launch the interpreter's built-in dev server in your project directory, load up localhost in your browser, work on your code, and testing incremental changes locally is just a matter of hitting F5.

[moebrowne]

By default the dev server is single threaded, but since PHP 7.4 you can add more with an env: `PHP_CLI_SERVER_WORKERS`