PHP gets current page URL

This PHP snippet can help you let users jump directly to the page they visited before after logging in

function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $ _SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&", $url);
return validURL;
}

Usage:

echo "Currently you are on: ".current_url();
?>

PHP, URL