How can I disable the display of images or text? using a specific User-Agent?

Question

PHP

Hello.
I heard that it is possible to disable the display of images or text using the User-Agent for a specific browser!
How it works? and how to implement it?

I've searched all over the internet and can't find anything

Answer 1

<?php if($_SERVER['HTTP_USER_AGENT'] == 'Название вашего User-Agent') { ?>

<style type="text/css">
  .page-content .sidebar-dropdown, .sidebar-dropdown {    // - Тут указываем что нужно убрать!
    display: none !important;
  }
</style>

<?php } ?>

Answer 2

Read the headers, and with a certain User-Agent disable
https://www.php.net/manual/en/function.getallheade...