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PHP Build a Simple PHP Application Integrating with PayPal Array Keys

Posted by CRYSTAL MORRIS
CRYSTAL MORRIS
Courses Plus Student 2,809 Points

PHP Notice: Undefined variable: isbn in c06af3c2-ff24-4afa-8512-35309da624e5.php on line 85

There Is No Line 85, I Have pit Double Arrows Everywhere Before After And In The Middle Of The Foreach

Challenge task 1 of 2 The array below contains a list of books. 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.

<?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
$books = $isbn("978-0743261690" => "Gilgamesh", "978-0060931957" => "The Odyssey", "978-0192840509" => "Aesop's Fables", "978-0520227040" => "Mahabharta", "978-0393320978" => "Beowulf");
        <?php foreach($books as $book) { ?>
            <li><?php echo $book; ?>(<?php echo                    $books["$isbn"]; ?>)</li>
        <?php } ?>
    </ul>
</body>
</html>

2 Answers

Jeremy Germenis
Jeremy Germenis
29,854 Points
Jeremy Germenis
Jeremy Germenis
29,854 Points

You have an unnecessary "<?php" in your code next to the foreach loop

You create an array with array() not $variable(). This is the format of an array with a key: $arrayName = array("key" => "value") --> $books = array("978-0743261690" => "Gilgamesh");

Your foreach loop is only assigning your value and not the key and value: foreach($arrayName as $key => $value) --> foreach($books as $isbn => $title)

CRYSTAL MORRIS
PLUS
CRYSTAL MORRIS
Courses Plus Student 2,809 Points
CRYSTAL MORRIS
CRYSTAL MORRIS
Courses Plus Student 2,809 Points

Thank You Jeremy :-)