Filterus\Filter::factory PHP Method

    public static function factory($filter)
    {
        if ($filter instanceof self) {
            return $filter;
        }
        list($filterName, $options) = static::parseFilter($filter);
        if (!isset(self::$filters[$filterName])) {
            throw new \InvalidArgumentException('Invalid Filter Specified: ' . $filter);
        }
        $class = self::$filters[$filterName];
        return new $class($options);
    }

 public function validate($value)
 {
     return Filter::factory('float')->validate($value);
 }