Quick scrape using simple_html_dom

dom_scraper.php

include('simple_html_dom.php'); // DOM parsing library. 
$url = (isset($_GET['site'])) ? $_GET['site'] : 'http://www.yelp.com'; //just an example, clean this
$dom = file_get_html($url);
foreach ($dom->find('a') as $node) {
  // Replace href attribute value
  $node->href = 'http://YOURPROXYSERVER.COM?requestedurl='.urlencode($url.$node->href);
}
// Output modified DOM
echo $dom->outertext;