Description:
------------
There are at least two cases where the example code on the "Dealing with XML errors" page[0] won't work correctly.  The first is mentioned in one of the notes[1]: a document with an empty root node will show up as an error, even if it parses correctly.  The second is if the nodes just below the document node are in a different namespace.

I recommend using

if (libxml_get_errors()) {

instead of the existing code.

[0] http://php.net/manual/en/simplexml.examples-errors.php
[1] http://php.net/manual/en/simplexml.examples-errors.php#96416


Test script:
---------------
First case:
<?php
libxml_use_internal_errors(true);
$sxe = simplexml_load_string("<?xml version='1.0'?><not_broken/>");
if (!$sxe) {
    echo "Failed loading XML\n";
    foreach(libxml_get_errors() as $error) {
        echo "\t", $error->message;
    }
}
?>

Second case:
<?php
libxml_use_internal_errors(true);
$sxe = simplexml_load_string("<?xml version='1.0'?><not_broken xmlns:m='urn:m'><m:foo></m:foo></not_broken>");
if (!$sxe) {
    echo "Failed loading XML\n";
    foreach(libxml_get_errors() as $error) {
        echo "\t", $error->message;
    }
}
?>


Expected result:
----------------
Empty page.


Actual result:
--------------
Failed loading XML