Thank you!
After i find this
https://www.zen-cart.com/showthread....PHP-7-warnings
i changed categories_ul_generator.php with ...el'. (float)($level+1) . '"... that is correct? Or must change again with (string)?

Now i changed and /includes/modules/pages/advanced_search_result/header_php.php:
$rate = $currencies->get_value($_SESSION['currency']);
if ($rate) {
$pfrom = (float)$_GET['pfrom'] / $rate;
$pto = (float)$_GET['pto'] / $rate;
}