Posted By

lasavior on 08/05/11


Tagged

number convert word


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Number to word converter (0-1 googol)


 / Published in: PHP
 

Takes a number (no decimal) and converts it to written words.Why'd i write it to be able to do such big numbers? Why not?

Note: The numbers next to the 'thousandfoldnums' are for your reference (thats how many zeros/places there are in that number), they have no function in the script.

I wrote this as a simple exercise to see if i could. I was reading something and a user mentioned that this was difficult. Even at my slow and limited programming capabilities i still did this in under two hours (still longer than i anticipated, but given my speed its still relatively short), pretty simple really. So here it is for anyone that needs it.

  1. <?PHP
  2.  
  3. /* Number to word converter
  4.  * (no decimal, 0-1E+100)
  5.  *
  6.  * Created: 8/4/2011 by lasavior
  7.  * Version: 1
  8.  *
  9.  * example: echo numbertoword('3210984286');
  10.  * output: 'three billion, two hundred and ten million, nine hundred eighty-four thousand, two hundred and eighty-six'
  11.  *
  12.  */
  13.  
  14. function numbertoword($numbertoparse){
  15.  
  16. $number = (string)$numbertoparse;
  17.  
  18. $wordlist = array(
  19. 0 => 'zero',
  20. 1 => 'one',
  21. 2 => 'two',
  22. 3 => 'three',
  23. 4 => 'four',
  24. 5 => 'five',
  25. 6 => 'six',
  26. 7 => 'seven',
  27. 8 => 'eight',
  28. 9 => 'nine',
  29. 10 => 'ten',
  30. 11 => 'eleven',
  31. 12 => 'twelve',
  32. 13 => 'thirteen',
  33. 14 => 'fourteen',
  34. 15 => 'fifteen',
  35. 16 => 'sixteen',
  36. 17 => 'seventeen',
  37. 18 => 'eighteen',
  38. 19 => 'nineteen',
  39. 'tenfold' => array(
  40. 0 => 'zero',
  41. 1 => 'ten',
  42. 2 => 'twenty',
  43. 3 => 'thirty',
  44. 4 => 'fourty',
  45. 5 => 'fifty',
  46. 6 => 'sixty',
  47. 7 => 'seventy',
  48. 8 => 'eighty',
  49. 9 => 'ninety'),
  50. 'thousandfoldnums' => array(
  51. 'hundred',
  52. 'thousand' => 3,
  53. 'million' => 6,
  54. 'billion' => 9,
  55. 'trillion' => 12,
  56. 'quadrillion' => 15,
  57. 'quintillion' => 18,
  58. 'sextillion' => 21,
  59. 'septillion' => 24,
  60. 'octillion' => 27,
  61. 'nonillion' => 30,
  62. 'decillion' => 33,
  63. 'undecillion' => 36,
  64. 'duodecillion' => 39,
  65. 'tredecillion' => 42,
  66. 'quattuordecillion' => 45,
  67. 'quindecillion' => 48,
  68. 'sexdecillion' => 51,
  69. 'septendecillion' => 54,
  70. 'octodecillion' => 57,
  71. 'novemdecillion' => 60,
  72. 'vigintillion' => 63,
  73. 'unvigintillion' => 66,
  74. 'duovigintillion' => 69,
  75. 'tresvigintillion' => 72,
  76. 'quattuortillion' => 75,
  77. 'quinvigintillion' => 78,
  78. 'sexvigintillion' => 81,
  79. 'septentillion' => 84,
  80. 'octovigintillion' => 87,
  81. 'novemvigintillion' => 90,
  82. 'trigintillion' => 93,
  83. 'untrigintillion' => 96,
  84. 'duotrigintillion' => 99,
  85. 'googol' => 100));
  86. $wordlist['thousandfoldtext'] = array_keys($wordlist['thousandfoldnums']);
  87.  
  88. if ($number > 999E+100 || !is_numeric($number) || !is_string($number)):
  89.  
  90. die("Incompatible input. Must be a string & below 1,000 Googol");
  91. endif;
  92.  
  93.  
  94.  
  95.  
  96. $number_length = strlen($number);
  97.  
  98. $number_length_div_3 = $number_length/3;
  99.  
  100.  
  101.  
  102.  
  103. for ($count = ceil($number_length_div_3); $count > 0; $count--){
  104.  
  105. $number_length = strlen($number);
  106.  
  107. $number_length_div_3 = $number_length/3;
  108.  
  109. $segment_length_1 = is_int($number_length_div_3) ? $number_length_div_3 - 1 : floor($number_length_div_3);
  110. $segment_length_2 = ($number_length - ($segment_length_1 * 3));
  111.  
  112. if ($number_length < 4):
  113.  
  114. $segment_length_2 = $number_length;
  115. endif;
  116.  
  117. $segment = (int)substr($number, 0, $segment_length_2);
  118.  
  119. if ($segment == 0):
  120.  
  121. //do nothing
  122. elseif ($segment < 20):
  123.  
  124. $number_word .= $wordlist[$segment] . " ";
  125. elseif ($segment < 100):
  126.  
  127. $two_digit_1 = (int)substr($segment, 0, 1);
  128. $two_digit_2 = (int)substr($segment, 1, 1);
  129.  
  130. $number_word .= $wordlist['tenfold'][$two_digit_1];
  131. if ($two_digit_2 != 0):
  132.  
  133. $number_word .= "-" . $wordlist[$two_digit_2];
  134. endif;
  135. $number_word .= " ";
  136. else:
  137.  
  138. $three_digit_1 = (int)substr($segment, 0, 1);
  139. $three_digit_2 = (int)substr($segment, 1, 1);
  140. $three_digit_2_1 = (int)substr($segment, 1, 2);
  141. $three_digit_3 = (int)substr($segment, 2, 1);
  142.  
  143. $number_word .= $wordlist[$three_digit_1] . " hundred ";
  144.  
  145. if ($three_digit_2 > 1 && $three_digit_3 == 0):
  146.  
  147. $number_word .= "and ";
  148. endif;
  149.  
  150. if ($three_digit_2_1 == 0):
  151.  
  152. //do nothing
  153. elseif ($three_digit_2_1 < 20):
  154.  
  155. $number_word .= "and " . $wordlist[$three_digit_2_1] . " ";
  156. else:
  157.  
  158. if ($number_length < 4 && $three_digit_3 != 0):
  159.  
  160. $number_word .= "and ";
  161. endif;
  162. $number_word .= $wordlist['tenfold'][$three_digit_2];
  163. if ($three_digit_3 != 0):
  164.  
  165. $number_word .= "-" . $wordlist[$three_digit_3];
  166. endif;
  167. $number_word .= " ";
  168. endif;
  169. endif;
  170.  
  171. if ($number_length > 3 && $segment > 0):
  172.  
  173.  
  174. $number_word .= $wordlist['thousandfoldtext'][$segment_length_1] . ", ";
  175. endif;
  176.  
  177. $number = substr($number, $segment_length_2);
  178. } //END FOR
  179.  
  180. return $number_word;
  181. } //END FUNCTION
  182. ?>

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