public function hash($string)
    {
        return implode('/', Arr::slice(
            Str::split($this->string($string), $this->length),
            0, $this->depth
        ));
    }
public function hash($string)
    {
        return implode('/', Arr::slice(
            Str::split($this->string($string), $this->length),
            0, $this->depth
        ));
    }
@param string $string

@return array