------------------------------------ time | id | cash ------------------------------------ 2006-10-07 | 1 | 24000 2006-10-08 | 1 | 140000 ------------------------------------ How him so that the calculation field 'cash' can be 380000,what the SQL or PHP order?.. $df = mysql_query("SELECT * from saldo where id = '1'"); if (!$df) { echo 'Could not run query1: ' . mysql_error(); exit; } while ($sh = mysql_fetch_array($df)) { $tk = $sh[1] + $sh[1]; echo $tk; } But results above like; 480000160000 That I wanted results of the total number field record 'cash' to one,just like this 380000