    public function getAuthority()
    {
        if ($this->host == '') {
            return '';
        }

        $authority = $this->host;
        if ($this->userInfo != '') {
            $authority = $this->userInfo . '@' . $authority;
        }

        if ($this->port !== null) {
            $authority .= ':' . $this->port;
        }

        return $authority;
    }
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.