In Carbon, did you know you can add various options to format diffForHumans()? Read the docs for more examples.
$user->created_at->diffForHumans();
=> "17 hours ago"
$user->created_at->diffForHumans([ 'parts' => 2]);
=> "17 hours 54 minutes ago"
$user->created_at->diffForHumans([ 'parts' => 3 'join' => ', ',]);
=> "17 hours, 54 minutes, 50 seconds ago"
$user->created_at->diffForHumans([ 'parts' => 3, 'join' => ', ', 'short' => true,]);
=> "17h, 54m, 50s ago"