$sql = "INSERT INTO ".TB_PREF."item_codes
(item_code, stock_id, description, category_id, quantity, is_foreign)
VALUES( ".db_escape($item_code).",".db_escape($stock_id).",
$sql = "INSERT INTO ".TB_PREF."item_codes
(item_code, stock_id, description, category_id, quantity, is_foreign)
VALUES( ".db_escape($item_code).",".db_escape($stock_id).",