Get contents of BODY without DOCTYPE, HTML, HEAD and BODY tags

Question

What I am trying to do is include an HTML file within a PHP system (not a problem) but that HTML file also needs to be usable on its own, for various reasons, so I need to know

Answer 1

$site = file_get_contents("http://www.google.com/");

preg_match("/]*>(.*?)<\/body>/is", $site, $matches);

echo($matches[1]);