PHP Script – Transform Number To English Words

Need to transform or convert numeric value(number) to words (English version)? In this article, we provide you with a ready used PHP function that can do that task for you. This function also can be use to convert currency to words. This is usually being used in invoice generation.

Source Code

<?php
    //By    : Xhanch Studio
    //URL   : http://xhanch.com/

    function get_num_name($num){
        switch($num){
            case 1:return 'one';
	    case 2:return 'two';
	    case 3:return 'three';
	    case 4:return 'four';
	    case 5:return 'five';
	    case 6:return 'six';
	    case 7:return 'seven';
	    case 8:return 'eight';
	    case 9:return 'nine';
        }
    }

    function num_to_words($number, $real_name, $decimal_digit, $decimal_name){
        $res = '';
        $real = 0;
        $decimal = 0;

        if($number == 0)
            return 'Zero'.(($real_name == '')?'':' '.$real_name);
        if($number >= 0){
            $real = floor($number);
            $decimal = number_format($number - $real, $decimal_digit, '.', ',');
        }else{
            $real = ceil($number) * (-1);
            $number = abs($number);
            $decimal = number_format($number - $real, $decimal_digit, '.', ',');
        }
        $decimal = substr($decimal, strpos($decimal, '.') +1);

        $unit_name[1] = 'thousand';
        $unit_name[2] = 'million';
        $unit_name[3] = 'billion';
        $unit_name[4] = 'trillion';

        $packet = array();	

        $number = strrev($real);
        $packet = str_split($number,3);

        for($i=0;$i<count($packet);$i++){
            $tmp = strrev($packet[$i]);
            $unit = $unit_name[$i];
            if((int)$tmp == 0)
                continue;
            $tmp_res = '';
            if(strlen($tmp) >= 2){
                $tmp_proc = substr($tmp,-2);
                switch($tmp_proc){
                    case '10':
                        $tmp_res = 'ten';
                        break;
                    case '11':
                        $tmp_res = 'eleven';
                        break;
                    case '12':
                        $tmp_res = 'twelve';
                        break;
                    case '13':
                        $tmp_res = 'thirteen';
                        break;
                    case '15':
                        $tmp_res = 'fifteen';
                        break;
                    case '20':
                        $tmp_res = 'twenty';
                        break;
                    case '30':
                        $tmp_res = 'thirty';
                        break;
                    case '40':
                        $tmp_res = 'forty';
                        break;
                    case '50':
                        $tmp_res = 'fifty';
                        break;
                    case '70':
                        $tmp_res = 'seventy';
                        break;
                    case '80':
                        $tmp_res = 'eighty';
                        break;
                    default:
                        $tmp_begin = substr($tmp_proc,0,1);
                        $tmp_end = substr($tmp_proc,1,1);

                        if($tmp_begin == '1')
                            $tmp_res = get_num_name($tmp_end).'teen';
                        elseif($tmp_begin == '0')
                            $tmp_res = get_num_name($tmp_end);
                        elseif($tmp_end == '0')
                            $tmp_res = get_num_name($tmp_begin).'ty';
                        else{
                            if($tmp_begin == '2')
                                $tmp_res = 'twenty';
                            elseif($tmp_begin == '3')
                                $tmp_res = 'thirty';
                            elseif($tmp_begin == '4')
                                $tmp_res = 'forty';
                            elseif($tmp_begin == '5')
                                $tmp_res = 'fifty';
                            elseif($tmp_begin == '6')
                                $tmp_res = 'sixty';
                            elseif($tmp_begin == '7')
                                $tmp_res = 'seventy';
                            elseif($tmp_begin == '8')
                                $tmp_res = 'eighty';
                            elseif($tmp_begin == '9')
                                $tmp_res = 'ninety';

                            $tmp_res = $tmp_res.' '.get_num_name($tmp_end);
                        }
                        break;
                }

                if(strlen($tmp) == 3){
                    $tmp_begin = substr($tmp,0,1);

                    $space = '';
                    if(substr($tmp_res,0,1) != ' ' && $tmp_res != '')
                        $space = ' ';

                    if($tmp_begin != 0){
                        if($tmp_begin != '0'){
                            if($tmp_res != '')
                                $tmp_res = 'and'.$space.$tmp_res;
                        }
                        $tmp_res = get_num_name($tmp_begin).' hundred'.$space.$tmp_res;
                    }
                }
            }else
                $tmp_res = get_num_name($tmp);
            $space = '';
            if(substr($res,0,1) != ' ' && $res != '')
                $space = ' ';
            $res = $tmp_res.' '.$unit.$space.$res;
        }

        $space = '';
        if(substr($res,-1) != ' ' && $res != '')
            $space = ' ';

        if($res)
            $res .= $space.$real_name.(($real > 1 && $real_name != '')?'s':'');

        if($decimal > 0)
            $res .= ' '.num_to_words($decimal, '', 0, '').' '.$decimal_name.(($decimal > 1 && $decimal_name != '')?'s':'');
        return ucfirst($res);
    }

    //Examples:

    echo num_to_words('11314', '', 0, '').'<br/>';
    //Result: Eleven thousand three hundred and fourteen
    echo num_to_words('12500', '', 0, '').'<br/>';
    //Result: Twelve thousand five hundred
    echo num_to_words('1234567890', '', 0, '').'<br/>';
    //Result: One billion two hundred and thirty four million five hundred and sixty seven thousand eight hundred and ninety
    echo num_to_words('325.25', 'euro', 2, 'cent').'<br/>';
    //Result: Three hundred and twenty five euros Twenty five cents
    echo num_to_words('1234567890.25', 'dollar', 2, 'cent').'<br/>';
    //Result: One billion two hundred and thirty four million five hundred and sixty seven thousand eight hundred and ninety dollars Twenty five cents
?>

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