Description:
------------
print_r on a domtext object whose content has been modified will still display the old content.


Reproduce code:
---------------
<pre>
<?php
dl("php_domxml.dll"); //for windows systems only
$oXml = xmldoc('<one><two/><three>blah</three></one>');
$xpresult = xpath_eval(xpath_new_context($oXml), "/one/three");
$var = $xpresult->nodeset[0]->child_nodes();
$var[0]->set_content('hello');
echo($oXml->dump_mem());
print_r($var[0]);
?>
</pre>

Expected result:
----------------
<pre>
<?xml version="1.0"?>
<one><two/><three>hello</three></one>
domtext Object
(
    [type] => 3
    [name] => #text
    [content] => hello
    [0] => 4
    [1] => 6475536
)
</pre>

Actual result:
--------------
<pre>
<?xml version="1.0"?>
<one><two/><three>hello</three></one>
domtext Object
(
    [type] => 3
    [name] => #text
    [content] => blah
    [0] => 4
    [1] => 6475536
)
</pre>