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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Working with Functions

Edward Lee
Edward Lee
1,805 Points
Posted by Edward Lee
Edward Lee
1,805 Points

Can this questions can be broken down and explained?

What does the following code display?

$numbers = array(1,2,3,4);
$total = count($numbers);
$sum = 0;
$loop = 0;

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

echo $sum;

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

$numbers = array(1,2,3,4)

$total = count($numbers) = 4

For each:

Loop = 1 ; if 1 < 4 then sum = 0+1 =1

Loop = 2; if 2 < 4 then sum = 1+2 =3

Loop = 3; if 3 < 4 then sum = 3 + 3 = 6

Loop = 4; if 4 < 4 (not true)

Sum = 6

Edward Lee
Edward Lee
1,805 Points
Edward Lee
Edward Lee
1,805 Points

Thanks for breaking down that question it really helped A LOT. Here's a similar question I'm still struggling with... can you break this down as well?

$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;

?>