Sum Of A Float Array

[clapperboy]

Hello,
I have multiple float arrays that represent different node Y positions over time.
I want to get the sum of all the elements of an array.
for argument sake, here are my arrays.
float $a[] = "0,1,2,3,4,5";
float $b[] = "0,2,4,6,8,10,12,14";

how to I get to add up all the numbers?

i want to get
float $sumofa = 15;
float $sumofb = 56;

thanks

[clapperboy]

Well I've got this so far

float $test[]= {0,1,2,3,4,5};
int $a = size($test);
float $sum = 0;
for ($b=0;$b<=$a;$b++)
{
$sum = $sum+$test[$b];
}
print $sum;

Can anyone come up with something simpler?
Thanks

[daniel-faust]

CODE
float $test[]= {0,1,2,3,4,5};
float $sum = 0;
for ($value in $test)
  $sum += $value;
print $sum;

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btw, today is the 300th birthday of Leonard Euler, we owe him a lot. http://en.wikipedia.org/wiki/Euler