                serendipity_db_query("INSERT INTO {$serendipity['dbPrefix']}entrycat (entryid, categoryid) VALUES ({$entry['id']}, " . (int)$cat . ")");
            }
        } elseif ($had_categories) {
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.