Description:
------------
This could be related to bug 31942.

When a global array variable is accessed in both the __construct & __get method and subsequently looped using foreach, it causes segmentation fault the second time the variable is accessed.

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

$data = array(1, 2, 3);

class classA {
  private $properties;
  function __construct () { $this->properties = $GLOBALS["data"]; }
  function __get ($prop)  { return $GLOBALS["data"]; }
}

function loopValues () {
  $a = new classA();
  foreach ($a->values as $i => $v) { }
}

function dumpValues () {
  $a = new classA();
  var_dump($a->values);
}

loopValues();
dumpValues();

?>

Expected result:
----------------
array(3) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
}


Actual result:
--------------
Segmentation fault