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

Rex Irvin Carpen
Rex Irvin Carpen
3,314 Points

I have already display the ISBN but the book title is gone ?

I am really having hard time with for each i don't really get how did i display the isbn could someone help me.

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

1 Answer

Ivan Penchev
Ivan Penchev
13,832 Points

OK OK little mistake here. When you say : $book => $isbn that means that BOOK has inside of it ISBN and ISBN has inside of it the book title.

So basically you are trying to echo two times the same information :=)

so switch your declaration to this:

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

which reflects your structure $books["978-0743261690"] = "Gilgamesh";

And then:

<?php echo $book . ' (' . $isbn . ')'; ?>