help with adding

["Jay Fitzgerald" <jayfitz@xxxxxxxxx>]

I have messed with this for a couple of days and cant get it right. Maybe I
need sleep :-)

 

The code below is echoing the qty correctly (10, 5, 25)

 

for ($i = 1; $i <= $sendnum; $i++)

{

            $qty = $_POST['qty'.$i];

            echo $qty . '<br />';

}

 

The question is, how would I take add each of these numbers (10+5+25)?

 

Any help is appreciated.