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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
Posted by 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

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

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
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!

Frederick Rogers
Frederick Rogers
25,142 Points
Frederick Rogers
Frederick Rogers
25,142 Points

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