NetteAddons\Model\Utils\VersionParser::compare PHP Метод

    public function compare(AddonVersion $a, AddonVersion $b)
    {
        $parser = $this->getParser();
        $a = $parser->normalize($a->version);
        $b = $parser->normalize($b->version);
        $constraint = new Constraint('==', $a);
        if ($constraint->versionCompare($a, $b, '==')) {
            return 0;
        } elseif ($constraint->versionCompare($a, $b, '<')) {
            return -1;
        } else {
            return 1;
        }
    }