Introduction User-Defined Function 3of 3

Well, I do have all the answers here in my top-secret briefcase. :-)

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Bummer!It looks like you have not created a variable named $sum in your main code, outside of the function. Please create it and store the return value from the mimic_array_sum function call in it. where do you place the variable?

Your function code looks right. Now you need to create a variable outside of the function, like this:

function mimic_array_sum($sum) {
                            $sum = 0;

                foreach($array as $element) {
                                    $sum = $sum + $element;
                }
                return $sum;
}

$palindromic_primes = array(11, 757, 16361);

$sum = ____;

$sum = 17118; $sum = 0; $sum = return; Which one or do I need to go back to math class

The instructions ask you to do this:

Please create it and store the return value from the mimic_array_sum function call in it.

That means do this:

$sum = mimic_array_sum($palindromic_primes);

In earlier step, we wrote the mimic_array_sum function that receives an array of numbers and adds up all its elements. In this step, we need to call that function. We pass in an array of numbers ($palindromic_primes), and the function returns the sum of them. We then load that return value into a variable named $sum.

Does that help?

<?php

function mimic_array_sum($array) { $sum $sum;
foreach($array as $element) { $sum = $sum + $element; } return $sum; }

$palindromic_primes = array(11, 757, 16361);

$sum = mimic_array_sum($palindromic_primes); ?> "Still say's bummer!

"Bummer" means you have invalid PHP code. You changed a line from what you sent me earlier. You now have this ...

<?php 

function mimic_array_sum($array) {
                            $sum $sum;         

... but you used to have this:

<?php 

function mimic_array_sum($array) {
                            $sum = 0;

It was correct before, and you'll need to change it back.

It looks like you are not displaying anything to the screen. Be sure to use an echo command.

function mimic_array_sum($array) { $sum = 0; I tried: echo sum = 0 echo 0;

Try this:

echo $sum;

Oh, but not inside the function. You need to do that at the end of your code.

$sum = mimic_array_sum($palindromic_primes);
echo $sum;

perfect your a genius!!