How to bypass filters and execute php code?

Question

PHP

There is no wisiwig editor in the admin panel, all text is formatted using html tags.
When you try to add php code to an article, the code is taken in comments <-- php code --!>
When you try to add --!> before php code, the entire code is displayed as text, that is, php does not process it.
Texts are stored in MySQL database version 5.5
. What are the options to execute php code?

Answer 1

php.net/manual/en/function.eval.php

Answer 2

none

Answer 3

There are no such options :)