php function DocTime time floor time 3600 floor time 3600 60 time 3600

<?php

function DocTime($time) {

    $h = floor($time/3600);
    $m = floor(($time%3600)/60);
    $s = ($time%3600)%60;
    return $h.':'.$m.':'.$s;

}

$sum = (time()-1405010920);

echo DocTime($sum);