CODE EXAMPLE FOR PHP

webiste url filter with pregx

    $url = "https://www.azonedev.com";
    $url_to_main_domain = preg_replace('/(https|http|:|//|www.|s)/i','',$url);
    $remove_sub_dir_from_url = preg_replace('/(/).*/','',$url_to_main_domain);
    echo $remove_sub_dir_from_url;