PHP pow function not working as expected

Question

How is it possible to create a doubling function?

I have a start value 50 and I have an x value of 3 as in the following example. I would like to get the following result:

y = 50 * 2 ^ 3 = 400.

But if I write the following code in PHP I get 1000000 as the result:

$y = pow(50 * 2 , 3);

How do I write this this power function properly in PHP?

Answer 1

This should work for you:

(You just wrote it in the wrong order)

echo $y = 50 * pow(2 , 3);

Output:

400

Your old code:

$y = pow(50 * 2 , 3); //Same as: $y = pow(100 , 3); and this means: 100 * 100 * 100