Crunz\Event::every PHP Method

    public function every($unit = null, $value = null)
    {
        if (!isset($this->fieldsPosition[$unit])) {
            return $this;
        }
        $value = $value == 1 ? '*' : '*/' . $value;
        return $this->spliceIntoPosition($this->fieldsPosition[$unit], $value)->applyMask($unit);
    }