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

MacKenzie T. Stout
MacKenzie T. Stout
23,972 Points

How to assign array keys to a temporary variable within a foreach statement?

I don't understand how to assign array keys to a temporary variable within a foreach statement.

Code so far:

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

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

2 Answers

Hi MacKenzie,

To loop over both the key and the value in an array you can use the following:

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

The keys will be stored in $isbn and the values will be stored in $book each time through the loop.

MacKenzie T. Stout
MacKenzie T. Stout
23,972 Points

Thank you! I was thinking too hard on this, it was more simple than I thought!

Hi jason, thank you for replying. This worked perfectly! Have a nice day!