Фикс деления на ноль

shop.php

@@ -18,7 +18,7 @@ if ($user['battle'] != 0) {
 
 $sellItemId = empty($_GET['sellitem']) ?: $_GET['sellitem'];
 
-if ($sellItemId) {
+if ($sellItemId > 0) {
     $dress = db::c()->query('SELECT `id`, `name`, `cost`, `type`, `duration`, `maxdur`, `goden`, `dategoden`, `koll` FROM `inventory` WHERE `dressed` = 0 AND `id` = ?i AND `owner` = ?i', $sellItemId, $user['id'])->fetch_assoc();
     $price = $dress['cost'] * 1;
     $kols = '';