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array_combine modification

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Is there a way to have the effect of array_combined, but ensure that duplicate elements of an array are not removed?

For example, the way things are now, this happens:

[code=php:0]Array ( [name] => Array ( [0] => Joe [1] => Joe [2] => Joe ) [animal] => Array ( [0] => Dog  [1] => Cat [2] => Rabbit  ) [submit] => Validez )


[code=php:0]Array ( [Joe] => Dog [] => )[/code]

What I would want is for it to return:

[code=php:0]Array ( [Joe] => Dog [Joe] => Cat  [Joe] => Rabbit)[/code]

Upon array_combine. 

This is the array_combine function I'm using:

[code=php:0]if (!function_exists('array_combine')) {
  function array_combine($a, $b) {
      $c = array();
      if (is_array($a) && is_array($b))
          while (list(, $va) = each($a))
              if (list(, $vb) = each($b))
                  $c[$va] = $vb;
                  break 1;
      return $c;

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Array construct is built such that duplicate keys are removed and the recent occuring one stays.


$data = array("Joe"=>"Dog", "Joe"=>"Cat");
will print Array ( [Joe] => Cat )

What's wrong with returning

array("Joe"=>array("Dog", "Cat", "Rabbit")) ?

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