WordPress get current URL

wp_get_current_url.php

/**
 * There is no method of getting the current URL in WordPress.
 * Various snippets published on the Web use a combination of home_url and add_query_arg.
 * However, none of them work when WordPress is installed in a subfolder.
 * The method below looks valid. There is a theoretical chance of HTTP_HOST tampered, etc.
 * However, the same line of code is used by the WordPress core, for example in
 * @see wp_admin_canonical_url
 * so we are going to use it, too
 * *
 * Note that #hash is always lost because it's a client-side parameter.
 * We might add it using a JavaScript call.
 */
function wp_get_current_url() {
	return set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
}