currency to word convert is not working for xx.29

Question

I'm trying convert currency to word. It is working fine but when I am trying to convert xx.29 then word showing twenty eight. My code is below

    function getBangladeshiCurrency(float $number)
{
    $decimal = round($number - ($no = floor($number)), 2) * 100;
    $decimal_part = $decimal;
    $hundred = null;
    $hundreds = null;
    $digits_length = strlen($no);
    $decimal_length = strlen($decimal);
    $i = 0;
    $str = array();
    $str2 = array();
    $words = array(0 => '', 1 => 'one', 2 => 'two',
        3 => 'three', 4 => 'four', 5 => 'five', 6 => 'six',
        7 => 'seven', 8 => 'eight', 9 => 'nine',
        10 => 'ten', 11 => 'eleven', 12 => 'twelve',
        13 => 'thirteen', 14 => 'fourteen', 15 => 'fifteen',
        16 => 'sixteen', 17 => 'seventeen', 18 => 'eighteen',
        19 => 'nineteen', 20 => 'twenty', 30 => 'thirty',
        40 => 'forty', 50 => 'fifty', 60 => 'sixty',
        70 => 'seventy', 80 => 'eighty', 90 => 'ninety');
    $digits = array('', 'hundred','thousand','lac', 'crore');

    while( $i < $digits_length ) {
        $divider = ($i == 2) ? 10 : 100;
        $number = floor($no % $divider);
        $no = floor($no / $divider);
        $i += $divider == 10 ? 1 : 2;
        if ($number) {
            $plural = (($counter = count($str)) && $number > 9) ? '' : null;
            $hundred = ($counter == 1 && $str[0]) ? ' ' : null;
            $str [] = ($number < 21) ? $words[$number].' '. $digits[$counter]. $plural.' '.$hundred:$words[floor($number / 10) * 10].' '.$words[$number % 10]. ' '.$digits[$counter].$plural.' '.$hundred;
        } else $str[] = null;
    }

    $d = 0;
    while( $d < $decimal_length ) {
        $divider = ($d == 2) ? 10 : 100;
        $decimal_number = floor($decimal % $divider);
        $decimal = floor($decimal / $divider);
        $d += $divider == 10 ? 1 : 2;
        if ($decimal_number) {
            $plurals = (($counter = count($str2)) && $decimal_number > 9) ? 's' : null;
            $hundreds = ($counter == 1 && $str2[0]) ? ' ' : null;
            @$str2 [] = ($decimal_number < 21) ? $words[$decimal_number].' '. $digits[$decimal_number]. $plural.' '.$hundred:$words[floor($decimal_number / 10) * 10].' '.$words[$decimal_number % 10]. ' '.$digits[$counter].$plural.' '.$hundred;
        } else $str2[] = null;
    }

    $Rupees = implode('', array_reverse($str));
    $Paysa = implode('', array_reverse($str2));
      if ($decimal_part > 0)
      { $ps=' and ';
         }
  else {
    $ps='';
  }
    $Paysa = ($decimal_part > 0) ? $Paysa . ' paisa.' : '';
    return ($Rupees ? $Rupees . 'taka ' : '') . $ps . $Paysa;
}

Other amount is working but after decimal point for 29 is not working. For example : Number : 11,465,557.29 then in word showing : One crore fourteen lac sixty five thousand five hundred fifty seven taka and twenty eight paisa But it should One crore fourteen lac sixty five thousand five hundred fifty seven taka and twenty nine paisa

How can I solve it