Description:
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i found a bug of uasort function

Reproduce code:
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$x = array(1,1,1,1,1,1,1,'a'=>1);
uasort($x,create_function('$a,$b', 'return 0;'));
var_dump($x);

Expected result:
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array
  5 => int 1
  6 => int 1
  'a' => int 1
  4 => int 1
  3 => int 1
  1 => int 1
  2 => int 1
  0 => int 1