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By: a guest on Jun 9th, 2012  |  syntax: None  |  size: 0.35 KB  |  hits: 26  |  expires: Never
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  1. function comb($arr, $n = NULL, $partial = '')
  2. {
  3.  
  4.   if (is_string($arr))
  5.   {
  6.     $arr = str_split($arr);
  7.   }
  8.  
  9.   if ($n === NULL)
  10.   {
  11.     $n = count($arr);
  12.   }
  13.  
  14.   if ($n != 0)
  15.   {
  16.     $var = array();
  17.     foreach ($arr as $value)
  18.     {
  19.       $var = array_merge($var, comb($arr, $n-1, $partial.$value));
  20.     }
  21.     return $var;
  22.   }
  23.  
  24. }
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