<?php

$html = '<html><body><div style="rubbish" id="man">something </div><div id="otherid">blabla</div></body></html>';

preg_match_all('%(<div.*?id="man">.*?</div>)%im', $html, $result, PREG_PATTERN_ORDER);
for ($i = 0; $i < count($result[1]); $i++) {
	echo $result[1][$i];
}