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

Posted by Jonathan Tebb
Jonathan Tebb
672 Points

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 :)

Jonathan Tebb
Jonathan Tebb
672 Points

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
seal-mask
.a{fill-rule:evenodd;}techdegree
Sara Masek
Front End Web Development Techdegree Student 11,513 Points
Sara Masek
.a{fill-rule:evenodd;}techdegree
Sara Masek
Front End Web Development Techdegree Student 11,513 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!