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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Array Keys

Andrew Norris
Andrew Norris
4,857 Points

Stuck on array_keys code challenge in Build a Basic PHP Website module.

I can't seem to get the syntax right to assign the array key from the $books array to a variable named $isbn.


$books["978-0743261690"] = "Gilgamesh";
$books["978-0060931957"] = "The Odyssey";
$books["978-0192840509"] = "Aesop's Fables";
$books["978-0520227040"] = "Mahabharta";
$books["978-0393320978"] = "Beowulf";

    <title>Five Great Books</title>
    <h1>Five Great Books</h1>
    $isbn = array_keys($books);
        <?php foreach($books as $book => $isbn) { ?>
            <li><?php echo $book; ?></li>
        <?php } ?>

1 Answer

Bob McCarty
Bob McCarty
Courses Plus Student 16,618 Points


change the foreach loop from

<?php foreach($books as $book => $isbn) { ?>


<?php foreach($books as $isbn => $book) { ?>
Andrew Norris
Andrew Norris
4,857 Points

Thanks. I had it backwards.