public static function getCurrentUrl() 
    {
        $pageURL = 'http';
        
        if (isset($_SERVER["HTTPS"])) 
        {
            $pageURL .= "s";
        }
        
        $pageURL .= "://";

        if ($_SERVER["SERVER_PORT"] != "80") 
        {
            $pageURL .= $_SERVER["SERVER_NAME"] . ":" . 
                        $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
        } 
        else 
        {
            $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
        }

        return $pageURL;
    }