PHP get latest html template in a directory - (bug: didnt work past num 9 for some reason)

get-latest-html-in-directory.php

<?php 

// example 1

$episodes = preg_grep('~^good-.*\.html$~', scandir(__DIR__));

$d = new DOMDocument;
$mock = new DOMDocument;
$d->loadHTML(file_get_contents(__DIR__ . '/' . end($episodes)));
$body = $d->getElementsByTagName('body')->item(0);
foreach ($body->childNodes as $child) {
    $mock->appendChild($mock->importNode($child, true));
}

echo $mock->saveHTML();

// example 2

function getHTMLFromFileForEmail() 
{ 

    ob_start();

    echo '<table width="100%" border="0" cellspacing="0" cellpadding="0"><tr><td align="center">';
    $html_files = preg_grep('~^index.*\.html$~', scandir(__DIR__));
    $d = new DOMDocument;
    $mock = new DOMDocument;
    $d->loadHTML(file_get_contents(__DIR__ . '/' . end($html_files)));
    $body = $d->getElementsByTagName('html')->item(0);
    foreach ($body->childNodes as $child) {
        $mock->appendChild($mock->importNode($child, true));
    }
    echo $mock->saveHTML();
    echo "</td></tr></table>";
    $html = ob_get_contents();

    ob_end_clean();
    return $html;
}