InstantShop. Корзина. Как сделать нормальный вывод?

 
el.closest('.price_table').find('select...')
 

$(this).parents('price_table').children("select[name=var_art_no]").val();

 
$(this).closest('price_table').children("select[name=var_art_no]").val();
 

 
var_art_no: el.closest('.price_table').children('select[name="var_art_no"]').val()
 

 
    public function addToCart($item_id, $var_art_no='', $qty=1, $chars=false) {
 
        $session_id = session_id();
        $var_art_no = $var_art_no ? $var_art_no : '';
 
        $chars_hash = is_array($chars) ? "'".md5(serialize($chars))."'" : 'NULL';
 
 
        $exists_id  = $this->inDB->get_field('cms_shop_cart', "session_id='{$session_id}' AND item_id='{$item_id}' AND var_art_no='{$var_art_no}' AND chars_hash='{$chars_hash}'", 'id');
 
 
        if (!$exists_id){
 
            $chars_info = array();
 
            if ($chars){
 
                foreach($chars as $id=>$value){ $chars_ids[] = $id; }
                $chars_ids = implode(',', $chars_ids);
 
                $sql    = "SELECT id, title FROM cms_shop_chars WHERE id IN ({$chars_ids})";
                $result = $this->inDB->query($sql);
 
                if ($this->inDB->num_rows($result)){
                    while($c = $this->inDB->fetch_assoc($result)){
                        $chars_info[$c['id']] = $c['title'].': '.$chars[$c['id']];
                    }
                    $chars_info = $this->inDB->escape_string(implode(', ', $chars_info));
                }
 
            }
 
            $chars_info = $chars_info ? "'{$chars_info}'" : 'NULL';
 
            $sql = "INSERT INTO cms_shop_cart (`session_id`, `item_id`, `var_art_no`, `qty`, `pubdate`, `chars`, `chars_hash`)
                    VALUES ('{$session_id}', '{$item_id}', '{$var_art_no}', '{$qty}', NOW(), {$chars_info}, '{$chars_hash}')";
 
        } else {
 
            $qty = intval($qty);
 
            $sql = "UPDATE cms_shop_cart SET qty = qty + {$qty} WHERE id = {$exists_id} LIMIT 1";
 
        }
 
        $this->inDB->query($sql);
 
        return true;
 
    }