            $opt .= "<option value=\"{$key}\" title=\"".htmlspecialchars($value)."\" {$sel}>".htmlspecialchars($value)."</option>";

        }
        return $opt;

    }

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.