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PHP Build a Simple PHP Application Integrating with PayPal Array Keys

SP van der Merwe
SP van der Merwe
6,291 Points

What do they mean with the hint: "you should be using a double arrow"? I am struggling with this question.

I am struggling with this question, any help would be appreciated thanks.

books.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 $book) { ?>
            <li><?php echo $book; ?></li>
      <?php $isbn_code = $_GET["id"];
            $isbn = $book["isbn_code"];?>

        <?php } ?>
    </ul>
</body>
</html>

2 Answers

Hi,

Without giving you the exact answer the double arrow they're referring to is =>.

The following line needs to be edited to include this and load the book isbn in to a variable of $isbn:

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

Randy goes over this at around 4:30 here.

Hope that helps to give you an idea how to proceed.

-Rich

Damien Watson
Damien Watson
27,419 Points

Hey, you need to modify the 'foreach' to get key and value pairs.

<?php
  // eg   foreach(array_expression as $key => $value) { }

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