[andrewfelix]

Agreed. I was interested up until this point..."Your PHP scripts will be evaluated by SAPI components: web server module, PHP-fpm or CLI. All needed for PHP deploying is a SAPI environment."

What? Sorry but I know nothing about deployment. Should I? In the past I've only used PHP to solve simple problems.

[Mikushi]

You don't necessarily need to know about the SAPI, but what he says is true. Any environment (Apache, Lighttpd, FPM, CLI, ...) that runs PHP, is built on top of the SAPI provided by the Zend Engine.

That's interesting stuff, but not on the "must know" list.