php pow
$z = pow(2, 8); // int(256) $z = $x ** $y; // PHP >= 5.6
Here is what the above code is Doing:
1. $x is assigned the value of 2.
2. $y is assigned the value of 3.
3. $z is assigned the value of 2 to the power of 3.
4. $z is assigned the value of 2 to the power of 8.
5. $z is assigned the value of 2 to the power of 3.