Sql query return :false

[Chill_user]

Hello to all,

I tried to execute sql query to get all info about CartRule by ID of cart rule (need product_id cart rule using and description of the cart rule.

			$sql = new DbQuery();
            $sql->select('*');
            $sql->from('uhep_cart_rule');
            $sql->where('id_cart_rule = .$voucher_int');
            $tar = Db::getInstance()->executeS($sql);
            var_dump($tar);

But the return is bool(false)

 

What is the problem?

[EvaF]

$sql->where('id_cart_rule = '.$voucher_int);

 

[Chill_user]

Thanks!