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

Owa Aquino
Owa Aquino
19,277 Points

Need help on this Code Challenge for PHP Basic.

Hello,

It just kept saying that "Your foreach statement needs to assign the array keys to a temporary variable named $isbn."

My answer was :

<?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 $book => $item) { 
          $isbn = array_keys($books);
      ?>
            <li><?php echo $book; ?></li>
        <?php } ?>
    </ul>
</body>
</html>

Don't really quite understand the array keys.

Thanks in advance!

1 Answer

In your foreach you need to set up the temporary assignment there like this:

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

array_keys() gets the values of all the keys in the entire array:

http://php.net/manual/en/function.array-keys.php