Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Kohane Kagami
12,390 PointsWhat's wrong with this code?
Here is the quiz. "Next, modify the code inside the foreach loop to display both the $title and the $isbn. After the title, add a space, an opening parenthesis, the ISBN, and a closing parenthesis, like this: Gilgamesh (978-0743261690)"
and here is my code. and the error message is " The ISBN numbers should appear in parenthesis following the corresponding title."
output.html is as follows:
Five Great Books
Notice: Undefined variable: title in index.php on line 20 (978-0743261690) Notice: Undefined variable: title in index.php on line 20 (978-0060931957) Notice: Undefined variable: title in index.php on line 20 (978-0192840509) Notice: Undefined variable: title in index.php on line 20 (978-0520227040) Notice: Undefined variable: title in index.php on line 20 (978-0393320978)
<?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 $isbn=>$book) { ?>
<li><?php echo $title. " ". '('. $isbn . ')'; ?></li>
<?php } ?>
</ul>
</body>
</html>
2 Answers
jcorum
71,830 PointsThe problem is here: <?php echo $title. " ". '('. $isbn . ')'; ?> There is no $title variable. Instead use $book, the variable created in your foreach loop.
<?php foreach($books as $isbn=>$book) { ?>
<li><?php echo $book. " ". '('. $isbn . ')'; ?></li>
Kohane Kagami
12,390 PointsThank you very much. :)