Value of variable form from 2 variables

Dear All


I have a typical problem

I have am accepting qty and value and deriving amount

There are say 6 such values and I had defined the variable names as follow

qty0 rate0 amt0
qty1 rate1 amt1
qty2 rate2 amt2
qty3 rate3 amt3
qty4 rate4 amt4
qty5 rate5 amt5
qty6 rate6 amt6


I want to use for loop to derive amt
I tried by passing the counter (0,1,2,3,4 ) to a function say calcval

function calval(cntr) {
q = 'qty"+cntr+"';
r='rate"+ntr+"';
val=q * r;
}

Indeed this is not working !


Thanks in advance for help extended by you .
I really admire your efforts !

It looks like you're working in Javascript (I'll show PHP code aswell).

In javascript:

Firstly, use an array for qty, rate and amt - ie. qty[0], qty[1] instead of qty0, qty1.


In PHP:

Firstly, use an array for qty, rate and amt - ie. $qty[0], $qty[1] instead of $qty0, $qty1.