for::version

public function version($propertyName, $type = self::VERSION_TYPE_STRING)
    {
        if (empty($propertyName)) {
            return false;
        }

        // set the $type to the default if we don't recognize the type
        if ($type !== self::VERSION_TYPE_STRING && $type !== self::VERSION_TYPE_FLOAT) {
            $type = self::VERSION_TYPE_STRING;
        }

        $properties = self::getProperties();

        // Check if the property exists in the properties array.
        if (true === isset($properties[$propertyName])) {

            // Prepare the pattern to be matched.
            // Make sure we always deal with an array (string is converted).
            $properties[$propertyName] = (array) $properties[$propertyName];

            foreach ($properties[$propertyName] as $propertyMatchString) {

                $propertyPattern = str_replace('[VER]', self::VER, $propertyMatchString);

                // Identify and extract the version.
                preg_match(sprintf('#%s#is', $propertyPattern), $this->userAgent, $match);

                if (false === empty($match[1])) {
                    $version = ($type == self::VERSION_TYPE_FLOAT ? $this->prepareVersionNo($match[1]) : $match[1]);

                    return $version;
                }

            }

        }

        return false;
    }