if ($age > 60*60*24*365*2) {
$age_str = floor($age/60/60/24/365);
$age_str .= " years ago";
+ $max_cache = (60*60*24*365) - ($age % (60*60*24*365));
} else if ($age > 60*60*24*(365/12)*2) {
$age_str = floor($age/60/60/24/(365/12));
$age_str .= " months ago";