Advice needed

Sorry couldn't think of a better subject for this email :( This has stumped 7 people so far. I'm not an expert with php, but any help would be great. I have the following $Quantity1 $Quantity2 $Quantity3 and $Price1 $Price2 $Price3 These variables will eventually make a "chart"/database with the following headings q1 q2 q3 q5 q10 q15 q20 q25 q50 q100 q300 q500 q600 q1000000000 the number represents the number of quantity so $Quantity1 uses $Price1 's value so if $Quantity1 is 10 and $Price1 is $1.00 that means each "unit" is .10 so the output would be q1 q2 q3 q5 q10 q15 q20 q25 q50 q100 q300 q500 q600 q1000000000 0 0 0 0 .10 .10 .10 .10 .10 .10 .10 .10 .10 .10 Now the tricky part is $Quantity2 can either be blank or have a value and if $Quantity2 has a value then $Quantity3 can either be blank or have a value SO If $Quantity2 is 500 and $Price2 is $40.00 the output would now be q1 q2 q3 q5 q10 q15 q20 q25 q50 q100 q300 q500 q600 q1000000000 0 0 0 0 .10 .10 .10 .10 .10 .10 .10 .08 .08 .08 I think and hope you get the picture. Things we know If there is no value for $Quantity2 then there will be no $Quantity3 and of course if either or both of those quantities are empty there will be no price. And of course if there is a value for either of those quantities, there will be a price. So what method would be best for doing this? Any functions that may come in handy? _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com