Exponentiation in PHP

There is also a special operator ** for exponentiation. Let's use it to raise the number 10 to the third power:

<?php
	echo 10 ** 3; // outputs 1000
?>

Let's raise the value of a variable to a power:

<?php
	$a = 10;
	echo $a ** 3; // outputs 1000
?>

It might be the case that both the number and the exponent are stored in variables:

<?php
	$a = 10;
	$b = 3;
	echo $a ** $b; // outputs 1000
?>

Raise the number 2 to the 10th power. Display the result on the screen.