Description:
------------
Returning array('5' => 'Foo', '10' => 'Bar') from a SoapServer handler class ends up as array(0 => 'Foo', 1 => 'Bar') at the client end. But array('a' => 'Foo', 'b' => 'Bar') does end up correctly. It only fails with numeric keys. I'm not using WSDL in this case. I think integer keys that are not in a simple 0..n range should end up in an associative array, not indexed with new 0..n keys.

Reproduce code:
---------------
<?php

class MyHandler
{
  public function getData()
  {
    return array('5' => 'Foo', '10' => 'Bar');
  }
}


// initialize soap-server:

$soap = new SoapServer(null, array('uri' => 'http://uri/', 'encoding' => 'ISO-8859-1'));
$soap->setClass('MyHandler');
$soap->handle();

?>

Expected result:
----------------
array('5' => 'Foo', '10' => 'Bar')

Actual result:
--------------
array(0 => 'Foo', 1 => 'Bar')