This is a simple PHP code that converts a number of seconds into a string according to the following format: M d h m s. Number of months is an approx calculation supposing months are 30 days long.

seconds to date

function seconds2human($ss) {
$s = $ss%60;
$m = floor(($ss%3600)/60);
$h = floor(($ss%86400)/3600);
$d = floor(($ss%2592000)/86400);
$M = floor($ss/2592000);

return "$M months, $d days, $h hours, $m minutes, $s seconds";
}