<?php deceleration

Sirs,

I am trying to protect my site and would like to add the code you suggested but I do not know where to put it.

What is <?php deceleration and where do I put the code please.

when you open the templates index.php file the first code you will see is this here at line 1:
simply add the code after that line:

Engineers use programming code to cause programs to cooperate with information bases and different components to guarantee fast and compelling communication between site connection points and clients. Notwithstanding the programming language, backend designers need to know numerous systems, libraries, information bases, servers, and different instruments. What's more, however these experts work freely, they aren't just bustling coding, testing, and investigating. They invest a lot of energy speaking with senior backend engineers, planners, QAs, project directors, chiefs, and partners.
Source: https://mobilunity.com/blog/hire-back-end-developer/