Convert Number to Words in PHP

Convert Number to Words in PHP

Introduction

Sometimes, web applications need to convert numbers into words. This is commonly used in invoice systems, billing software, cheque printing, payroll applications, and financial reports.

For example:

1250

becomes

One Thousand Two Hundred Fifty

In this tutorial, you'll learn how to convert numbers to words in PHP using a reusable function with complete source code and examples.

Why Convert Numbers to Words?

Converting numbers into words is useful for:

• Invoice generation
• Cheque printing
• Salary slips
• Banking applications
• Billing software
• Financial reports

Lets see by real example

 <?php

function numberToWords($num)

{

    $ones = 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"

    );

    $tens = array(

        2 => "twenty",

        3 => "thirty",

        4 => "forty",

        5 => "fifty",

        6 => "sixty",

        7 => "seventy",

        8 => "eighty",

        9 => "ninety"

    );

    if ($num < 20) {

        return $ones[$num];

    } elseif ($num < 100) {

        return $tens[floor($num / 10)] . ($num % 10 != 0 ? " " . $ones[$num % 10] : "");

    } else {

        return "";

    }

}

function decimalToWords($decimal)

{

    $decimalStr = str_pad($decimal, 2, "0", STR_PAD_RIGHT);  // Ensure it has 2 digits

    $decimalWords = "";   

    for ($i = 0; $i < strlen($decimalStr); $i++) {

        $digit = intval($decimalStr[$i]);

        $decimalWords .= numberToWords($digit) . " ";

    }

    return trim($decimalWords);

}

function convertNumberToWords($number)

{   

    $formattedNumber = number_format($number, 2, '.', '');    

    $parts = explode(".", $formattedNumber);    

    $integerPart = isset($parts[0]) ? intval($parts[0]) : 0;

    $decimalPart = isset($parts[1]) ? intval($parts[1]) : 0;    

    $integerWords = numberToWords($integerPart);

    $decimalWords = decimalToWords($decimalPart);    

    return ucwords($integerWords) . " and " . ucwords($decimalWords);

}

$number = 45.88;

echo convertNumberToWords($number);