No.
PHP runs first, on the server. It generates HTML markup and sends it to the browser. PHP has no clue that things like css or the DOM even exist.
Later, the browser uses HTML, CSS, and javascript to build/manipulate the DOM, which is (more-or-less) what a “webpage” is. The browser has no clue that PHP even exists.
If you want to know about/ change things in the browser, you need to use javascript. PHP is long gone by that point.
