Czas trwania czasu trwania czasu w czasie Laravela

# 1. get initial time
$start = now();

  // code here ...

# 2. get diff time from $start
$time = $start->diffInSeconds(now());

# 3. convert it in human readable
$_format = \Carbon\CarbonInterval::seconds($time)->cascade()->forHumans();
lalala