How to Convert numbers or Indian Currency into words in PHP

If we are creating an application that deals with financial stuff or billing, then most probably we face a situation where we have to convert numerical value or amount into words.

In this article, we will cover this topic by simply writing a PHP function and we will also create an HTML form for testing purposes and we will see it in the live demo as in the previous article.

Bellow is the live demo screenshot:
How to Convert numbers or Indian Currency into words in PHP

So, for converting a number into words simply we need a PHP function That can convert a number into words with array logic

Let's convert the number 1200.85 into words,

<?php
function NumberintoWords(float $number)
{
    $number_after_decimal = round($number - ($num = floor($number)), 2) * 100;

    // Check if there is any number after decimal
    $amt_hundred = null;
    $count_length = strlen($num);
    $x = 0;
    $string = array();
    $change_words = array(
        0 => 'Zero', 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 => 'Fourty', 50 => 'Fifty', 60 => 'Sixty',
        70 => 'Seventy', 80 => 'Eighty', 90 => 'Ninety'
    );
    $here_digits = array('', 'Hundred', 'Thousand', 'Lakh', 'Crore');
    while ($x < $count_length) {
        $get_divider = ($x == 2) ? 10 : 100;
        $number = floor($num % $get_divider);
        $num = floor($num / $get_divider);
        $x += $get_divider == 10 ? 1 : 2;
        if ($number) {
            $add_plural = (($counter = count($string)) && $number > 9) ? 's' : null;
            $amt_hundred = ($counter == 1 && $string[0]) ? ' and ' : null;
            $string[] = ($number < 21) ? $change_words[$number] . ' ' . $here_digits[$counter] . $add_plural . '
       ' . $amt_hundred : $change_words[floor($number / 10) * 10] . ' ' . $change_words[$number % 10] . '
       ' . $here_digits[$counter] . $add_plural . ' ' . $amt_hundred;
        } else $string[] = null;
    }
    $implode_to_Words = implode('', array_reverse($string));
    $get_word_after_point = ($number_after_decimal > 0) ? "Point " . ($change_words[$number_after_decimal / 10] . "
        " . $change_words[$number_after_decimal % 10]) : '';
    return ($implode_to_Words ? $implode_to_Words : ' ') . $get_word_after_point;
}


echo NumberintoWords(1800.85);
PHP

The output of the above code will be:

One Thousand Eight Hundred Point Eight Five

Now think about converting the same amount into Indian currency

Let's Create a function 

<?php
function AmountInWords(float $amount)
{
    $amount_after_decimal = round($amount - ($num = floor($amount)), 2) * 100;

    // Check if there is any number after decimal
    $amt_hundred = null;
    $count_length = strlen($num);
    $x = 0;
    $string = array();
    $change_words = array(
        0 => 'Zero', 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 => 'Fourty', 50 => 'Fifty', 60 => 'Sixty',
        70 => 'Seventy', 80 => 'Eighty', 90 => 'Ninety'
    );
    $here_digits = array('', 'Hundred', 'Thousand', 'Lakh', 'Crore');
    while ($x < $count_length) {
        $get_divider = ($x == 2) ? 10 : 100;
        $amount = floor($num % $get_divider);
        $num = floor($num / $get_divider);
        $x += $get_divider == 10 ? 1 : 2;
        if ($amount) {
            $add_plural = (($counter = count($string)) && $amount > 9) ? 's' : null;
            $amt_hundred = ($counter == 1 && $string[0]) ? ' and ' : null;
            $string[] = ($amount < 21) ? $change_words[$amount] . ' ' . $here_digits[$counter] . $add_plural . '
       ' . $amt_hundred : $change_words[floor($amount / 10) * 10] . ' ' . $change_words[$amount % 10] . '
       ' . $here_digits[$counter] . $add_plural . ' ' . $amt_hundred;
        } else $string[] = null;
    }
    $implode_to_Rupees = implode('', array_reverse($string));
    $get_paise = ($amount_after_decimal > 0) ? "And " . ($change_words[$amount_after_decimal / 10] . "
   " . $change_words[$amount_after_decimal % 10]) . ' Paise' : '';
    return ($implode_to_Rupees ? $implode_to_Rupees . 'Rupees ' : '') . $get_paise;
}

$amount_to_be_convert = 1200.85;

if (isset($_POST['submit'])) {
    $amount_to_be_convert = $_POST['amount'];
}
$paid_ammount = round($amount_to_be_convert);
$get_round_amount = AmountInWords($paid_ammount);
$get_exact_amount = AmountInWords($amount_to_be_convert);
PHP

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The output of the above code will be:

One Thousand Two Hundred Rupees And Eight Five Paise

Now we will create an HTML form for testing our code by changing the value

<div class="container p-4">
    <div class="row">
        <div class="col-md-6">
            <form method="post" action="">
                <div class="mb-3">
                    <label for="amount" class="form-label">Amount / Number (it can except upto RS. 999999998)</label>
                    <input type="text" class="form-control" id="amount" name="amount" value="<?php echo $amount_to_be_convert; ?>">
                </div>
                <button type="submit" name="submit" class="btn btn-primary">Convert</button>
            </form>

            <br>

            <h2> Rounding off Result without paisa::</h2>
            <p class="text-success"><b>
                    <?php echo $get_round_amount ?></b></p>
            <hr>

            <h2> Exact Result with paisa</h2>
            <p class="text-success"><b>

                    <?php echo $get_exact_amount ?></b></p>

        </div>
    </div>
</div>
HTML
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