How can I include a query string with get_permalink

Question

My login link uses wp_login_url( get_permalink() ) so that the user is redirected back to the page they were viewing, and not to the dashboard.

However, this does not include query strings. So if a user was at here.com/?page=4 they would not be redirected back to page 4.

How can I include the query string in my code?

$items .= "<li class='menu-item'> <a href=\"".wp_login_url( get_permalink() )."\">Login</a></li>";

Answer 1

You can use add_query_arg() to add any query parameters you want to a URI, e.g.,

$redirect_uri = add_query_arg ('page', '4', get_permalink ()) ;
$login_uri = wp_login_url ($redirect_uri) ;

Or, you could simply use $_SERVER['REQUEST_URI'], which will already contain any query string present in the current page's URI, e.g.,

$login_uri = wp_login_url ($_SERVER['REQUEST_URI']) ;