Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Johannes Chitura
seal-mask
.a{fill-rule:evenodd;}techdegree
Johannes Chitura
PHP Development Techdegree Student 8,907 Points

Can't seem to get the $isbn variable working.

I updated my foreach loop to include the keys by changing it to $books as $keys => $book. Then I created a variable named $isbn and appended the $keys as the loop is running through. When I do a var_dump of $isbn, I'm able to see my array of keys but my answer seems to be wrong somewhere. Not sure where I am going wrong.

index.php
<?php

$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 $keys => $book) { 

              $isbn[] = $keys;

      ?>
            <li><?php echo $book; ?></li>
        <?php } ?>
    </ul>
</body>
</html>

1 Answer