get the current page id inside wordpress plugin page

Question

I need to get the current page id in WordPress plugin page outside the loop. And the code I wrote for getting current page id is in my plugin page.

Answer 1

I guess that this is the proper solution:

$id = get_queried_object_id();

which equals to:

function get_queried_object_id() {
    global $wp_query;
    return $wp_query->get_queried_object_id();
}