PHP program to calculate the power of a given number using recursion

Program/Source Code:

The source code to calculate the factorial of a given number using recursion is given below. The given program is compiled and executed successfully.

<?php
//PHP program to calculate the power of a number
//using recursion.
function Power($num, $p)
{
    if ($p == 0) return 1;
    return $num * Power($num, $p - 1);
}

$result = Power(5, 3);
echo "Result is: " . $result;
?>

Output:

Result is: 125

Explanation:

In the above program, we created a recursive function Power() to calculate the power of a given number, The Power() function returns the power of a specified number to the calling function, in our program, we calculated the power 3 of number 5 that is 125.