file_gets.php

<?php 
require '../simple_html_dom.php';

function grab_html($url)
{
	$file = file_get_contents($url);
	return $file;
}

// http://php.net/manual/en/book.dom.php#89718
function domInnerHtml($element)
{ 
    $innerHTML = ""; 
    $children = $element->childNodes; 
    foreach ($children as $child)
    { 
        $tmp_dom = new DOMDocument(); 
        $tmp_dom->appendChild($tmp_dom->importNode($child, true)); 
        $innerHTML .= trim($tmp_dom->saveHTML()); 
    } 
    return $innerHTML; 
} 

$html_page = grab_html($url);

$to_code = str_replace('<div>','<code>',$html_page);
$to_code = str_replace('</div>','</code>',$to_code);

$dom_code = new domDocument();
@$dom_code->loadHTML($to_code);
$get_code_tag = $dom_code->getElementsByTagName('code');

$coded_page = '';

foreach ($get_code_tag as $coded_tag) 
{
    $coded_page .= DOMinnerHTML($coded_tag);
} 

file_put_contents('noindex.html', $coded_page);

$html = file_get_html('noindex.html');

echo $html;

?>