    public function getTrack2()
    {
        $track2 = null;
        if ($tracks = $this->getTracks()) {
            $pattern = '/;\d{1,19}=\d{4}\d*\?/';
            if (preg_match($pattern, $tracks, $matches) === 1) {
                $track2 = $matches[0];
            }
        }
        return $track2;
    }
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.