how to get wordpress page url php code

Question

So am trying to get wordpress current page url in the header. I tried below code but not working, Please it urgent. your can see my client current music theme.

$current_url = home_url($_SERVER['REQUEST_URI'])

Answer 1

This has been resolved here:

How to get URL of current page displayed?

$current_url = add_query_arg( $wp->query_vars, home_url( $wp->request ) );