Convert seconds into days, hours, minutes and seconds

Question

I would like to convert a variable $uptime which is seconds, into days, hours, minutes and seconds.

Example:

Answer 1

All in one solution. Gives no units with zeroes. Will only produce number of units you specify (3 by default). Quite long, perhaps not very elegant. Defines are optional, but might come in handy in a big project.

define('OneMonth', 2592000);
define('OneWeek', 604800);  
define('OneDay', 86400);
define('OneHour', 3600);    
define('OneMinute', 60);

function SecondsToTime($seconds, $num_units=3) {        
    $time_descr = array(
                "months" => floor($seconds / OneMonth),
                "weeks" => floor(($seconds%OneMonth) / OneWeek),
                "days" => floor(($seconds%OneWeek) / OneDay),
                "hours" => floor(($seconds%OneDay) / OneHour),
                "mins" => floor(($seconds%OneHour) / OneMinute),
                "secs" => floor($seconds%OneMinute),
                );  

    $res = "";
    $counter = 0;

    foreach ($time_descr as $k => $v) {
        if ($v) {
            $res.=$v." ".$k;
            $counter++;
            if($counter>=$num_units)
                break;
            elseif($counter)
                $res.=", ";             
        }
    }   
    return $res;
}

Feel free to down-vote, but be sure to try it in your code. It might just be what you need.