Description:
------------
I am using simplexml_load_string
calling xml oject->childen();

echo xml element as array object

Segmentation fault


Reproduce code:
---------------
$xml_document2 =<<<EOT
<?xml version="1.0"?>
<merchant>
  <product>
    <productid>ISBN1845760832</productid>
  </product>
</merchant>
EOT;

$xml = simplexml_load_string($xml_document2);

$prod1 = $xml->children();
print_r($prod1);
echo $prod1['productid']; echo "\ndone.";


Expected result:
----------------
SimpleXMLElement Object
(
    [productid] => ISBN1845760832
)

done.

Actual result:
--------------
SimpleXMLElement Object
(
    [productid] => ISBN1845760832
)
Segmentation fault