Change Unix Timestap to readible

Hey,

I have the following code:


$timestamp = $row['last_seen'];
$curtime = time();
$lastSeen = $curtime - $timestamp;
echo $lastSeen;


Now only problem is that $lastSeen counts up in seconds, so instead of going to 1:00 mins it goes to 61secs.

Does anyone know of a way to display this time in a more user friendly fashion?

See this:
http://us.php.net/time

The date() function also works excellently, there is a link to it on that page.