    public static function attach($hooks_name, $func) {
        $hooks = self::$hooks;
        $hooks[$hooks_name][] = $func;
        self::$hooks = $hooks;
        return self::$hooks;
    }

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.