Description:
------------
the result of test script below is different between php version 5.1.6 and version 5.3.2.


Test script:
---------------
<?php
var_dump(phpversion());

$foo1 = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><root />');
$foo1->addChild("x", htmlspecialchars("<test />"));

$foo2 = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><root><x /></root>');
$foo2->x = htmlspecialchars("<test />");

var_dump($foo1->x);
var_dump($foo2->x);
var_dump($foo1->asXML() === $foo2->asXML());

?>

Expected result:
----------------
string(5) "5.1.6"
object(SimpleXMLElement)#3 (1) {
  [0]=>
  string(8) "<test />"
}
object(SimpleXMLElement)#3 (1) {
  [0]=>
  string(8) "<test />"
}
bool(true)



Actual result:
--------------
string(5) "5.3.2"
object(SimpleXMLElement)#3 (1) {
  [0]=>
  string(8) "<test />"
}
object(SimpleXMLElement)#3 (1) {
  [0]=>
  string(14) "&lt;test /&gt;"
}
bool(false)