Description:
------------
I create a Xml file and when i want to read some values it just return a blank value. I you do an echo to every value works fine, but when you put all togheter is when it fails

The same if you read directly from a file or from a var (simplexml_load_file or simplexml_load_string)

Reproduce code:
---------------
<?
$values = '<?xml version="1.0" encoding="ISO-8859-1" ?> 
           <root> 
		     <nota> <url><![CDATA[opinion.php?id=16619&extra=m]]></url> <plaza>MZT</plaza> </nota> 
		   </root>';
$xml = simplexml_load_string($values);

foreach ($xml->nota as $datos) {
  // work
  echo "-".$datos->plaza."-<br>";
  // work
  echo "-".$datos->url."-<br>";
  
  // put together
  $malecon_link[$datos->plaza] = $datos->url;
  // don't work
  echo "-".$malecon_link[$datos->plaza]."-<br>";
}
?>

Expected result:
----------------
$malecon_link[$datos->plaza] must return the value, in this case the url

Actual result:
--------------
Return a blank value