Convert any number to word using php

numbertoword

function numbertoword($number) {
    $units = array('', 'One', 'Two', 'Three', 'Four',
                   'Five', 'Six', 'Seven', 'Eight', 'Nine');

    $tens = array('', 'Ten', 'Twenty', 'Thirty', 'Forty',
                  'Fifty', 'Sixty', 'Seventy', 'Eighty', 
                  'Ninety');

    $special = array('Eleven', 'Twelve', 'Thirteen',
                     'Fourteen', 'Fifteen', 'Sixteen',
                     'Seventeen', 'Eighteen', 'Nineteen');

    $words = '';
    if ($number < 10) {
        $words .= $units[$number];
    } elseif ($number < 20) {
        $words .= $special[$number - 11];
    } else {
        $words .= $tens[(int)($number / 10)] . ' '
                  . $units[$number % 10];
    }

    return $words;
}