Do i need to learn any prerequisite before i get my hands on php?

Answer 1

Having a basic knowledge of html is preferred before going for css, js and php

Answer 2

knowing a bit of html is recommended but otherwise: nope, just go at it!

Answer 3

The language is tied with many other languages but can be used standalone too so no need for prerequisite.
It can be a good thing learning to set up a server or like me getting a free hosting solution to test scripts.
Php is used a lot on websites so html is also a good thing to pick up, I hope I answered your question. Good luck and may your bugs be few.