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PHP Build a Basic PHP Website Listing and Sorting Inventory Items Working with Functions

What does the following code display?

What does the following code display?
$numbers = array(1,2,3,4);
$total = count($numbers);
$sum = 0;
$output = "";
$loop = 0;

foreach($numbers as $number) {
    $loop = $loop + 1;
    if ($loop < $total) {
        $output = $number . $output;

echo $output;


I think it would help me if I understood what gives $number in the foreach function a value. Thanks in advance :)

Thanks Sara! With you clarifying that $number is passed a different value in the $numbers array each loop I was able to understand and answer this. The answer is 6 by the way for any students reading this.

1 Answer

Sara Masek
Sara Masek
Front End Web Development Techdegree Student 11,219 Points

Hey Jonathan, in every foreach loop you'll always need a value that acts as a placeholder for the answer you're trying to get, in this case it's a value extracted from the numbers array, which just happens to be named number. Without a value to pass, the loop would just be passing nothing essentially. I hope that helps!