downloads.php?cat_id=1&download_id=1

downloads.php?page_id=1

// Find the IDs of Downloads on the current Page
preg_match_all("/'(".$linkpath."|".$siteurl.")?downloads\.php\?(cat_id=[0-9]+)?(\&amp\;)?download_id=([0-9]+){1}(#c[0-9]+)?'/", $output, $downloads_matches);
// Add them into the Cache of IDs for Downloads
$id_cache['downloads'] = array_unique($downloads_matches[4]);

if (!empty($id_cache['downloads']))	{
	$result = dbquery("SELECT download_id, download_title FROM ".DB_DOWNLOADS." WHERE download_id IN(".implode(",", $id_cache['downloads']).")");
	while($data = dbarray($result))
	{
		$data_cache['downloads'][$data['download_id']] = $data['download_title'];
	}
}

$pattern = "/'(".$linkpath."|".$siteurl.")?downloads\.php\?(cat_id=[0-9]+)?(\&amp\;)?download_id=([0-9]+){1}(#c[0-9]+)?'/";
 
 
$output = preg_replace_callback($pattern, "replace_downloads", $output);

function replace_downloads($matches)
{
	global $data_cache;
	$replace = "'".$matches[1]."download-".$matches[4]."-".cleanmytext($data_cache['downloads'][$matches[4]]).URL_POSTFIX.(array_key_exists(5, $matches) ? $matches[5] : "")."'";
	return $replace;
}