How to programmatically hide a div in Drupale 7?

Question

Drupal

There was a need to hide a piece of output in the node. The problem is that this piece is displayed by Drupal as #markup and it's impossible to get close to the internal elements. Question: how to refer to elements inside $page['block']['#markup']…?

Answer 1

Just went through the wrong hook. It was necessary through form and not page

Answer 2

$dom = filter_dom_load($markup);
Further https://www.php.net/manual/ru/book.dom.php