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General Discussion

Posted by chris lightfoot
chris lightfoot
10,217 Points

Code Challenge Array Keys Stage 2

Hi I am having trouble with the code challenge: array keys stage 2, not sure where am i going wrong. can anyone help :) please find the code posted below:

<?php

$books["978-0743261690"] = "Gilgamesh"; $books["978-0060931957"] = "The Odyssey"; $books["978-0192840509"] = "Aesop's Fables"; $books["978-0520227040"] = "Mahabharta"; $books["978-0393320978"] = "Beowulf";

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

?><html> <head> <title>Five Great Books</title> </head> <body> <h1>Five Great Books</h1> <ul> <?php foreach($books as $isbn => $book) { ?> <li><?php echo $book; ?> (<?php echo $isbn; ?>)</li> <?php } ?> <?php } ?> </ul> </body> </html>

10 Answers

Mike Costa
PLUS
Mike Costa
Courses Plus Student 26,362 Points
Mike Costa
Mike Costa
Courses Plus Student 26,362 Points

Hey Chris,

The parentheses in your code are part of the html code and not in the php part of the code. Try concatenating it all into one string.

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

Hope that helps! :)

chris lightfoot
chris lightfoot
10,217 Points
chris lightfoot
chris lightfoot
10,217 Points

I dont get this at all it says:

"Next, modify the code inside the foreach loop to display the $isbn in parentheses. After the title, add a space, an opening parenthesis, the ISBN, and a closing parenthesis."

It says above "modify the code inside the foreach loop" there are 2 foreach loops on the sheet (which one do u modify?)

Then it goes on to say "After the title add a space, an opening parenthesis, the ISBN, and a closing parenthesis." so am guessing that is:

<title>Five Great Books</title>  (' . $isbn . ')

Can someone help please?

Mike Costa
PLUS
Mike Costa
Courses Plus Student 26,362 Points
Mike Costa
Mike Costa
Courses Plus Student 26,362 Points

Hey Chris,

This is the beginning code from the task 2 code challenge. There should only be one foreach loop.

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

The title for the book is coming from inside the foreach loop.. >>>> echo $book <<<< You were on the right track from your original post, but the formatting of your code was off. The parenthesis had to be all inside the php block, but you were putting them outside of the php blocks. 

<?php echo $book; ?> 
(
<?php echo $isbn; ?>
)
<?php } ?>
<?php } ?>

The instructions for this task are:

Next, modify the code inside the foreach loop to display the $isbn in parentheses. After the title, add a space, an opening parenthesis, the ISBN, and a closing parenthesis.

Broken down in little steps, the task looks like this:

After the title: echo $book;
add a space: echo $book . ' ';
an opening parenthesis: echo $book . ' ' . '(';
the ISBN: echo $book . ' ' . '(' . $isbn;
and a closing parenthesis: echo $book . ' ' . '(' . $isbn . ')';

Using concatenation (the period), you can break the instructions down one by one to complete the the task and "glue" the different pieces of the task together to output the complete string.

In hopes of not confusing you, you can even simplify this a little by marrying the space and open parenthesis:

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

I hope this helps. :)

Sam Bass
Sam Bass
9,038 Points

This answer is a great explanation! It works!

chris lightfoot
chris lightfoot
10,217 Points
chris lightfoot
chris lightfoot
10,217 Points

Thanks for going into so much detail for me mike :) your a legend.

chris lightfoot
chris lightfoot
10,217 Points
chris lightfoot
chris lightfoot
10,217 Points

haha yes i did it mike woooo :) dead happy now, think the main problem was that i added two foreach loops into the php, what an idiot hehe :)

Thanks again mike :)

Chris

Brodie Capel
Brodie Capel
16,365 Points
Brodie Capel
Brodie Capel
16,365 Points

im having the exact same issue.... but im 99.9% sure my code is correct here is my foreach loop

<?php foreach($books as $isbn => $book) { ?> <li><?php echo $book . ' (' . $isbn . ')'; ?> </li> <?php } ?>

Christopher Mell
Christopher Mell
9,152 Points
Christopher Mell
Christopher Mell
9,152 Points

<?php foreach($books as $isbn => $book) { ?> <li> <?php echo $book . ' (' . $isbn . ')'; ?> </li> <?php } ?>

This is my loop. When I view it in the browser it looks right to me..what am I doing wrong??!

Mike Becker
Mike Becker
3,303 Points
Mike Becker
Mike Becker
3,303 Points

Should look like this... <?php echo $book . ' ' . '(' . $isbn . ')'; ?> . Semantics is important, regardless if it looks right or not. Good luck.

Ryan Moody
Ryan Moody
20,499 Points
Ryan Moody
Ryan Moody
20,499 Points

Somebody didn't do a very good job explaining this one.

Kevin Stradtman
Kevin Stradtman
47,512 Points
Kevin Stradtman
Kevin Stradtman
47,512 Points

So this is the code...

<li><?php echo $books . ' (' . $isbn . ')'; ?></li>

The reason why all the above posts do not work is because everyone posted $book when it should be $books.