Description:
------------
The call to magic function __toString() gives a Fatal error. This method  should exists, see the reply of helly@php.net at  http://bugs.php.net/bug.php?id=25640

Reproduce code:
---------------
<?php
$xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<movies>
 <movie>
  <title>PHP: Behind the Parser</title>
  <characters>
   <character>
    <name>Ms. Coder</name>
    <actor>Onlivia Actora</actor>
   </character>
   <character>
    <name>Mr. Coder</name>
    <actor>El Act&#211;r</actor>
   </character>
  </characters>
  <plot>
   So, this language. It's like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.
  </plot>
  <great-lines>
   <line>PHP solves all my web problems</line>
  </great-lines>
  <rating type="thumbs">7</rating>
  <rating type="stars">5</rating>
 </movie>
</movies>
XML;

$xml = new SimpleXMLElement($xmlstr);

$m = $xml->movie[0]->plot; // "So this language. It's like..."

$m->__toString()
?>

Expected result:
----------------
So, this language. It's like, a programming language. Or is it a
   scripting language? All is revealed in this thrilling horror spoof
   of a documentary.

Actual result:
--------------
Fatal error: Call to undefined method SimpleXMLElement::__toString() in C:\php\xml.php on line 35