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introducing functions

what exactly are they asking for me to do ? I already know how the array_sum() function works but in what manner do they want it . The code below creates an array of numbers, loops through them one at a time, and sums their values. PHP actually has a native function that does this same thing: array_sum(). [The array_sum() function receives an array as its one and only argument, and it sends back the sum as the return value.] Modify the code below: remove the foreach loop and the working sum variable, replacing them with a call to the array_sum() function instead.

4 Answers

Chris Willoughby
Chris Willoughby
6,792 Points

I figured out the challange. They want you to replace the for each loop with somthing smaller.

$sum = array_sum($numbers);

echo $sum;

good luck

Michael O'Malley
Michael O'Malley
4,293 Points
            $sum = 0;
            foreach($numbers as $number) {
                $sum = $sum + $number;
            echo $sum;

Does the same thing as the array_sum() function.

Remove the code above and use the array_sum() function instead (echo the array_sum() instead of $sum).

Marvin Abella
Marvin Abella
6,378 Points

I believe they want you to sum up the array using a foreach. It will be helpful if you specifically put the challenge question here or just the section.

It finally clicked for me when I looked at the first example in the actual PHP manual here.