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Number to word converter "1->one" up to the million place

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this could be expanded to the billions place, but c'mon really people? it's got to call it quits somewhere

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  1. <?php 
  2.  
  3. $nwords = array(    "zero", "one", "two", "three", "four", "five", "six", "seven", 
  4.                      "eight", "nine", "ten", "eleven", "twelve", "thirteen", 
  5.                      "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", 
  6.                      "nineteen", "twenty", 30 => "thirty", 40 => "forty", 
  7.                      50 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty", 
  8.                      90 => "ninety" ); 
  9.  
  10. function int_to_words($x) 
  11. { 
  12.      global $nwords; 
  13.      if(!is_numeric($x)) 
  14.      { 
  15.          $w = '#'; 
  16.      }else if(fmod($x, 1) != 0) 
  17.      { 
  18.          $w = '#'; 
  19.      }else{ 
  20.          if($x < 0) 
  21.          { 
  22.              $w = 'minus '; 
  23.              $x = -$x; 
  24.          }else{ 
  25.              $w = ''; 
  26.          } 
  27.          if($x < 21) 
  28.          { 
  29.              $w .= $nwords[$x]; 
  30.          }else if($x < 100) 
  31.          { 
  32.              $w .= $nwords[10 * floor($x/10)]; 
  33.              $r = fmod($x, 10); 
  34.              if($r > 0) 
  35.              { 
  36.                  $w .= '-'. $nwords[$r]; 
  37.              } 
  38.          } else if($x < 1000) 
  39.          { 
  40.              $w .= $nwords[floor($x/100)] .' hundred'; 
  41.              $r = fmod($x, 100); 
  42.              if($r > 0) 
  43.              { 
  44.                  $w .= ' and '. int_to_words($r); 
  45.              } 
  46.          } else if($x < 1000000) 
  47.          { 
  48.              $w .= int_to_words(floor($x/1000)) .' thousand'; 
  49.              $r = fmod($x, 1000); 
  50.              if($r > 0) 
  51.              { 
  52.                  $w .= ' '; 
  53.                  if($r < 100) 
  54.                  { 
  55.                      $w .= 'and'; 
  56.                  } 
  57.                  $w .= int_to_words($r); 
  58.              } 
  59.          } else { 
  60.              $w .= int_to_words(floor($x/1000000)) .' million'; 
  61.              $r = fmod($x, 1000000); 
  62.              if($r > 0) 
  63.              { 
  64.                  $w .= ' '; 
  65.                  if($r < 100) 
  66.                  { 
  67.                      $word .= 'and '; 
  68.                  } 
  69.                  $w .= int_to_words($r); 
  70.              } 
  71.          } 
  72.      } 
  73.      return $w; 
  74. } 
  75. if(isset($_POST['num'])){
  76. 	$word = int_to_words($_POST['num']);
  77. 	echo $word.'<br /><a href="'.$_SERVER['PHP_SELF'].'"> try again</a><br />';	
  78. }else{ 
  79.      echo ' 
  80.      <form method="post" action="'.$_SERVER['PHP_SELF'].'"> 
  81.          <input type="text" name="num"> 
  82.          <input type="submit" value="Convert"> 
  83.      </form>'; 
  84. } 
  85. ?>

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