Description:
------------
I tried to load a xml file with ISO-8859-1 encoding.

I have tried several ways for loading, but I had no success because simplexml returns the loaded string with errors.

I have tried iconv functions too.

Reproduce code:
---------------
file test.php:
<?php
include ("example.php");

$xml = simplexml_load_string($xmlstr);

echo $xml->movie[0]->plot;
?>

file example.php:
<?php
$xmlstr = <<<XML
<?xml version='1.0' encoding="ISO-8859-1"?>
<movies>
 <movie>
  <plot>
   Matr?cula
  </plot>
 </movie>
</movies>
XML;
?>

Expected result:
----------------
Matr?cula

Actual result:
--------------
Matrícula