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

Alexandre Babeanu
Alexandre Babeanu
10,946 Points

I don't see what is wrong....

for some reason the script says the isbn variable is not declared..

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 $key => $book) { 
        ?>
            <li><?php 
                $isbn = $key;
                echo $book; ?></li>
        <?php } ?>
    </ul>
</body>
</html>

1 Answer

In short: you're doing too much work. Instead of setting $key and then inside of the loop reassigning it, make the $key value $isbn when defining the foreach loop.