在PHP中，你可以这样做：

$number = (new \NumberFormatter("en", \NumberFormatter::SPELLOUT))->format(300);
// $number = "three hundred"

你可以使用下面的方法来做到这一点，保留你的原始号码，并复制你的号码，并将其转换为字符串，并将其从你的API传递到你的前端应用程序，这样它就可以完美地完成你的工作。
它目前会给予你的货币名称在印度的格式，你可以改变它根据您的需要。

public function ConvertINWord($number)
    {
        $number = $number;
        $no = round($number);
        $point = round($number - $no, 2) * 100;
        $hundred = null;
        $digits_1 = strlen($no);
        $i = 0;
        $str = 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', 'lakh', 'crore');

        while ($i < $digits_1) {
            $divider = ($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) ? 's' : null;
                $hundred = ($counter == 1 && $str[0]) ? ' and ' : 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;
        }

        $str = array_reverse($str);
        $result = implode('', $str);

        $points = ($point) ?
            "." . $words[$point / 10] . " " .
            $words[$point = $point % 10] : 'Zero';

        return $result . "Rupees  " . $points . " Paise";
    }

你只需要把你的数字传递给这个函数，它会根据你的需要返回一个字符串。