Learn to code Pocketmine plugins, how fast is that possible?

I have a Minecraft PE server and would like to code plugins in this regard! I know that you need the PocketmineAPI and PHP knowledge. However, I have almost no experience in coding. I'm well positioned in terms of computer technology. (Knowledge) How can I learn coding and where?

Honest? It's not exactly easy, but here on this page you can practice as a beginner and first get an idea.

PHP 5 tutorial: https://www.w3schools.com/php/default.asp

You have to start from scratch and work your way through

There I need knowledge of HTML and JavaScript. It is necessary?

No, this is for a website. Usually you program with PHP websites…

For the plugins you will most likely only need PHP and be familiar with the API…