Cleaning up directory links.

Looking for a better way to clean up directory links. I know over time sites, change and are discontinued. I want to keep all my links as fresh and working as possible. Anyone have good php code for doing this. The code I am using seems to slow. Below I am looping through my mysql table url entries...

Thanks.

		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL,$URL);
		curl_setopt($ch, CURLOPT_HEADER, true);
		curl_setopt($ch, CURLOPT_NOBODY, true);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
		curl_setopt($ch, CURLOPT_MAXREDIRS, 10); //follow up to 10 redirections - avoids loops
		$data = curl_exec($ch);
		curl_close($ch);
		preg_match_all("/HTTP\/1\.[1|0]\s(\d{3})/",$data,$matches);
		$code = end($matches[1]);
		if(!$data) {
		  echo "($entryid) $URL <span style='color: red;font-weight:bold;'>Domain could not be found</span><br />";
		} else {
		  if($code==200) {
		    echo "($entryid) $URL <span style='color: green;'>Page Found</span><br />";
		  } elseif($code==404) {
		    echo "($entryid) $URL <span style='color: red;font-weight:bold;'>Page Not Found</span><br />";
		  }
		}

PHP: