Or even a few charactres shorter and a bit easier to read :
for(0..2) {
$res[$_]=$array1[$_] + $array2[$_] + $array3[$_];
}
>for($i=0;$i<3;$i++){
> $res[$i]=$array1[$i] + $array2[$i] + $array3[$i];
>}
:) HTH
DMuey
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