Stuck in PHP on the track at a simple Array and Key exercise.

Question

Sorry for asking dumb questions, but i got stuck in the php lesson and can´t solve this issue :-/:

"Each element in the array has the book’s title as its value and the ISBN as its key. Right now, the page is only displaying the book titles in the browser. In this code challenge, we will modify the page to also display each book’s ISBN. First, we need to make the keys from the books array accessible inside the foreach loop. Modify the foreach command so that, as it loops through the books, it loads the ISBN for each book into a working variable called $isbn."

QUESTION: it says books with isbn´s and titles! but how do i tell the site what is the ISBN ? this code konfuses me totally :-( have watched the php course until here more than twice. but now I´m stuck.

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

?><html>
<head>
    <title>Five Great Books</title>
</head>
<body>
    <h1>Five Great Books</h1>
    <ul>
        <?php foreach($books as $isbn => $book) { ?>
            <li><?php echo $book["isbn"]; ?></li>
        <?php } ?>
    </ul>
</body>
</html>```

Answer 1 · 2014-03-10T16:09:45Z

March 10, 2014 4:09pm

Hi Axel,

You just did a little too much for the code challenge. Remove ["isbn"] from the echo statement.

Jeff

Answer 2 · 2014-03-10T16:22:56Z

March 10, 2014 4:22pm

Thank you for your help!! that solved the question. Will continue to practice more. cheers axel

Welcome to the Treehouse Community

Looking to learn something new?

Axel Will

Axel Will

Stuck in PHP on the track at a simple Array and Key exercise.

2 Answers

Jeff Busch

Jeff Busch

Axel Will

Axel Will