Will this work with

if you want to do it in site run by wordpress then install insert_php
plugin

https://www.ads-software.com/plugins/insert-php/

and use this syntax.

[insert_php] instead of <?php
and
[/insert_php] instead of ?>

like this:

[insert_php]
//your code here
[/insert_php]

and that to in the text part of the page/post editor, not in the visual editor.