Calculate a variable amount in an array

[sidders]

Hi all, I have a problem that I need solving hope you can help point me in teh right direction. Ok I need to calculate a total of a variable amount I have created. I know how to do SQL sum totals, however this item is based on a calculation and not on a DB output. I have tried to put it in an array but still cannot get it to calculate.

 

held in a while loop the variable is output ok

 

echo round($reqprod); = OUTPUT DATA TO CORRESPONDING CELLS IN HTML

 

I need to calculate all teh values held in ($reqprod) to output at the top row of the table?

 

Any help would be superb thanks

 

Sidders