$result = mysql_query(\"SELECT indvsum.sum1 + indvsum.sum2 FROM (SELECT SUM(Cash) AS sum1, SUM(Bank) AS sum2 FROM players) indvsum
Why dont you just do
SELECT SUM(Cash) AS sum1, SUM(Bank) AS sum2 FROM players;
Assign the two values in php and then add them.
or
Use mysql_fetch_row
mysql_fetch_row