Question

What is the easiest way to achieve:

a => 1, b =>  0, c=> 3
a => 0, b => 10, c=> 1

Sum

a => 1, b =>10, c=>4

and

Minus

a => -1, b=> 10, c=> -2

I hope my examples make it clear… If you have any questions please leave a comment

Answer 1

 $sum = $minus = 0;
 foreach ($arrays as $key=>$val)
 {
   $sum   += $val;
   $minus -= ($val*-1);
 }