How to stop Sanitize Text Area input in CodeIgniter

  codeigniter, codeigniter-3, php

I am creating a form which has some inputs like this in picture.
Form to submit data

When I am adding simple text in my editor the form works fine and received all inputs on my controller. But when I am adding iframe of any kind I receive "Array()" empty array on my Controller while submitting the form.

I am using var_dump($_POST) to see input content on my Controller. On Localhost its works fine, I am facing this issue specifically on Production.

Source: Ask PHP