Description:
------------
I've noticed strange behavior when using references and foreach loop. 
It throws an error "Invalid argument supplied for foreach" but if the code
// $ass = &$array;
is commented out, the result is as expected:
Output:
in
in
in


Reproduce code:
---------------
<?
$array = array("1", "2", "3");
$ass = &$array;
foreach($array as $k => &$v)
{
  $array = false;

  $v = "Test";
  echo "in\n";
}
?>

Expected result:
----------------
in
in
in


Actual result:
--------------
in

Warning: Invalid argument supplied for foreach() in test.php on line 5