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

Javier MARQUEZ
Javier MARQUEZ
11,877 Points
Posted by Javier MARQUEZ
Javier MARQUEZ
11,877 Points

Cant complete the challenge

Take a look at my code, I have tried everything.

I am putting all the $id's into an array called $isbn[], I tried using it as a variable. I tried it on my computer and it works, can you copy paste the answer its killing me. lol.

Thanks

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 $id => $book) { ?>
            <?php $isbn[]=$id; ?>
            <li><?php echo $book . ' - '. $id; ?></li>
            <?php } 
           // var_dump ($isbn); ?>

            <?php $keys_books[] = array_keys($books); 



                print_r($keys_books)
            ?>
    </ul>
</body>
</html>

2 Answers

Paul Yabsley
Paul Yabsley
46,713 Points
Paul Yabsley
Paul Yabsley
46,713 Points

Hi Javier

I think it is a bit simpler than what you've done.

When using a foreach to iterate through an array, it is possible get both the key and the value at the same time. It looks like this:

<?php
foreach ($array as $key => $value)  {
  echo $key; // This will echo the key of each array item
  echo $value; // This will echo the value of each array item
}

http://php.net/manual/en/control-structures.foreach.php

Try adjusting your foreach statement to be foreach ($books as $isbn => $book). When I did that in the challenge it accepted the answer.

Javier MARQUEZ
Javier MARQUEZ
11,877 Points
Javier MARQUEZ
Javier MARQUEZ
11,877 Points

Thanks a lot, I understand now. I appreciate it thanks

Paul Yabsley
Paul Yabsley
46,713 Points
Paul Yabsley
Paul Yabsley
46,713 Points

Cool, no worries, glad to help.