Power operator

[azazelis]

Hey, i'm kinda new to php programming. Anyway i'm trying to use a power operator and it doesn't seem to be working. This is what i have:

$answer = ($length)^2;
echo $answer;

If anyone could give me the right operator i'd appreciate it.

[drew010]

actually, that (⁾ is the bitwise operator for XOR, you will want
$answer = pow($length, 2);