Crawl page for any link

[android2]

Hello everyone, I'm matt.

 

OK, I am trying to build a crawler that will get links and this code does get links from simple html page:

<?php
$URL = 'http://google.com/search?q=gold';

preg_match_all("/<a href=['\"](.*?)['\"][ ]?/i",file_get_contents($URL),$matches);

print_r($matches[1]);
?>

 

But I need a way to get ALL/ANY link on a page. Including links generated from feeds, widgets, etc. All links that a user sees. How can I do this? Please, any help would be appreciated.