Calculate the Hypotenuse of a Triangle give the A & B sides.

triangle.php

<?php
function hypotenuse($A, $B) 
        { 
            if(is_numeric($A) && is_numeric($B)) 
            { 
             
                return sqrt(($A * $A) + ($B * $B)); 
            } 
            else 
            { 
                return 0; 
            } 

        } 
?>