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PHP

Posted by Fuad Adetoro
Fuad Adetoro
6,490 Points

Stuck on Code Challenge: Array key 2/2

Question: "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.".

my code which i don't know what to do with it?

<?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>

it's very confusing for me i hope someone can help me :)

John Hebron
John Hebron
23,993 Points
John Hebron
John Hebron
23,993 Points

It seems as though you just need to print out the ISBN in quotes after the book title.

<?php

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

?> Five Great Books <?php foreach($books as $isbn => $book) {  
echo $book . ' "$isbn"'; // echo the book title, then concatenate a string with a space, quote, isbn, quote
} ?>
John Hebron
John Hebron
23,993 Points
John Hebron
John Hebron
23,993 Points

Yikes, messed up my echo there. Probably want to use:

echo "$book \"$isbn\""; // wrap the whole line in double quotes to render variables then place the $isbn in escaped double quotes;
Fuad Adetoro
Fuad Adetoro
6,490 Points

thanks now i get it!

2 Answers

Randy Hoyt
STAFF
Randy Hoyt
Treehouse Guest Teacher
Randy Hoyt
Randy Hoyt
Treehouse Guest Teacher

At the end of Step 1, the output looked like this:

Gilgamesh
The Odyssey
Aesop's Fables
Mahabharta
Beowulf

In Step 2, you need to change the code so that the output looks like this:

Gilgamesh (978-0743261690)
The Odyssey (978-0060931957)
Aesop's Fables (978-0192840509)
Mahabharta (978-0520227040)
Beowulf (978-0393320978)

Does that help?

Fuad Adetoro
Fuad Adetoro
6,490 Points

that helped a lot thanks Randy.

Makis Papadopoulos
Makis Papadopoulos
4,679 Points
Makis Papadopoulos
Makis Papadopoulos
4,679 Points

I stuck with this error: Bummer! The HTML for this page is not quite right: <html><head><title>Five Great Books </title></head><body><h1>Five Great Books</h1><ul><li>Gilgamesh (978-0743261690)</li><li>The Odyssey (978-0060931957)</li><li>Aesop's Fables (978-0192840509)</li><li>Mahabharta (978-0520227040)</li><li>Beowulf (978-0393320978)</li></ul></body></html>

My code:

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