$userAgent = \xj\ua\UserAgent::model();
/* @var \xj\ua\UserAgent $userAgent */
$platform = $userAgent->platform;
$browser = $userAgent->browser;
$version = $userAgent->version;
var_dump($platform, $browser, $version);

NULL string(11) "AppleWebKit" string(6) "537.36"

$uaAttributes = $userAgent->getAttributes(); // OR $userAgent->attributes
var_dump($uaAttributes);

array(3) { ["platform"]=> NULL ["browser"]=> string(11) "AppleWebKit" ["version"]=> string(6) "537.36" }

var_dump(\xj\ua\UserAgent::model()->getAttributes());

array(3) { ["platform"]=> NULL ["browser"]=> string(11) "AppleWebKit" ["version"]=> string(6) "537.36" }