<?php

include_once '../simple_html_dom.php';
function my_callback($element)
{
    if ($element->tag == 'input') {
        $element->outertext = 'input';
    }
    if ($element->tag == 'img') {
        $element->outertext = 'img';
    }
    if ($element->tag == 'a') {
        $element->outertext = 'a';
    }
}
$html = file_get_html('http://www.google.com/');
$html->set_callback('my_callback');
echo $html;