src/Money/DataMapper/Data/Money/Budget.php
public function hasMonth($month)
    {
        $bitmask = $this->getMonthBitmask();
        $month   = (int) $month;

        $bit = pow(2, $month - 1);

        return ($bit === ($bit & $bitmask));
    }
public function hasMonth($month)
    {
        $bitmask = $this->getMonthBitmask();
        $month   = (int) $month;

        $bit = pow(2, $month - 1);

        return ($bit === ($bit & $bitmask));
    }
Check if bitmask have given month.

@param  int $month Month number (January: 1, February: 2, March: 3, April: 4...)
@return bool