How to change a file in a user session?

Question

PHP

This code changes the file on the server:

$html = file_get_contents("index.html");
$html = strtr($html, array('Космолёт' => 'Вертолёт'));
file_put_contents("/", $html);
include "index.html";

How to change a file only in the user session and not on the server?

Answer 1

Why change the file itself?
Modify the data that is sent to the browser.
There are templates for this. They have conditions.

@if ($user->isAdmin) {
  @include 'footer'
}