Script runs slow but plenty of memory on server

[youneek]

Can anyone help me figure out how to make this script run faster?

 

<?
if (!isset($domains)){
?>
<form method="post" action="">
<textarea name="domains" rows="10" cols="30"></textarea><br />
<input type="submit" value="Send">
</form>
<?
}else{
$domains = explode("\n", $_POST['domains']);
foreach ( $domains as $addr ){
$url = "http://web.archive.org/web/*/http://".trim($addr, "\r");
$data = implode("", file($url));
preg_match_all ("/<p class=\"mainSearchTitle\">([^`]*?)<\/p>/", $data, $matches);
	foreach ($matches[0] as $match) {
	$match = strip_tags($match);
	echo trim(preg_replace("/ pages found for/", "", $match), "             ")."<br />";
	flush();
    	ob_flush();
	}
}
}
?>

[corbin]

Since it's a remote file (or it looks like one) your script has to retrieve it and so on.... Plus, the server at the other end could be the slow one, or even if it's not slow, if your script is making a lot of requests to it, it could be slightly lagging a little.