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Raul Chiru
Courses Plus Student 2,776 Pointswhy?
In the main code, outside of the function, use the new mimic_array_sum() function you just wrote. Store the return value in a variable called $sum, and then display that sum to the screen.
Bummer! It looks like you have not created a variable named $sum in your main code, outside of the function. Please create it and store the return value from the mimic_array_sum function call in it.
<?php
function mimic_array_sum($array) {
foreach($array as $number) {
$sum += $number;
}
return $sum; //return the value of $sum
}
$sum = mimic_array_sum($sum);
echo $sum;
$palindromic_primes = array(11, 757, 16361);
?>
3 Answers
Chris Adamson
132,143 PointsYou were pretty close, you need to pass an array, not the variable sum into the mimic_array_sum function:
<?php
$sum = 0;
function mimic_array_sum($array) {
foreach($array as $number) {
$sum += $number;
}
return $sum; //return the value of $sum
}
$sum = mimic_array_sum(array(11, 757, 16361));
echo $sum;
$palindromic_primes = array(11, 757, 16361);
?>
Kevin Korte
28,149 PointsYou're passing to your new mimic_array_function and argument of $sum, however that variable does not exist anywhere in a scope that your function can access it. So essentially you're passing your function the value of nil. Instead of passing it $sum you need to pass it something it can add, like that $palindromic_primes variable which we know has an array of numbers.
Raul Chiru
Courses Plus Student 2,776 Pointsthank you!