check all magento xml

check-xml.php

<?php
require_once('./app/Mage.php');
umask(0);
Mage::app();

// enable user error handling
libxml_use_internal_errors(true);

$root = './app';
$iterator  = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator($root, RecursiveDirectoryIterator::SKIP_DOTS),
    RecursiveIteratorIterator::SELF_FIRST,
    RecursiveIteratorIterator::CATCH_GET_CHILD
);

foreach ($iterator as $path => $item) {
    if ($item->isFile() && $item->getExtension() == 'xml') {
        $xml = simplexml_load_file($path);
        foreach (libxml_get_errors() as $error) {
            Mage::log($error);
            echo '<pre>';
		        print_r($error);
            echo '</pre>';
        }
        libxml_clear_errors();
    }
}