difference in time??

I have this code:
<?php echo human_time_diff(get_main_detail('auction_ends', $pid), current_time('timestamp')) . ' to go!'; ?>
It gives me the difference in time between auction_ends and the normal time. Which is exactly what i need, but i need the out put to be in days, and hours, and if it is possible even in seconds.

I think, somehow there is a code that gives the output in hours..
How can i change this.

The output of acutons_ends is:
<?php echo date('d-m-Y H:i', get_main_detail('auction_ends', $pid)); ?>
21-05-2010 20:29

How can i make the first code output this as a difference in time?

Thanks everyone!!