PHP: print_r displays an array but when I use the array, the index is undefined

Asked May 20 '18 at 15:27

Active May 20 '18 at 15:29

Viewed 21 times

print_r($post) does display the associative array but when I try to get a specific index, the index is undefined. What am I doing wrong?

    <?php
    $title = 'Post Detail';
    include('_top.php');
    require_once(__DIR__ . '/dao/PostDAO.php');
    //instantie van Klasse
    $postDAO = new PostDAO();
    //methode oproepen
    $post = $postDAO->getPostById();
    echo "<pre>";
    print_r($post);
    echo "</pre>";
    ?>
    <article>
      <header><h2><?php echo $post['title']; ?></h2></header>
      <?php echo $post['body']; ?>
    </article>
    
    <section class="comments">
      <header><h3>Comments</h3></header>
      <?php
      if (empty($comments)) {
        echo "<p>There are no comments for this post.</p>";
      } else {
        echo "<ol>";
        foreach( $comments as $comment ){
          echo "<li>";
          echo $comment['text'];
          echo "</li>";
        }
        echo "</ol>";
      }
      ?>
    </section>
    <?php include('_bottom.php');?>

I get this error:

Notice: Undefined index: title in /Applications/MAMP/htdocs/back-end/Lesweek 5/labo/startbestanden/14-exercise/post-detail.php on line 14

Notice: Undefined index: body in /Applications/MAMP/htdocs/back-end/Lesweek 5/labo/startbestanden/14-exercise/post-detail.php on line 15
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edited May 20 '18 at 15:29

asked May 20 '18 at 15:27

Lucas Verhoest

1

Show the actual output of print_r() – John Conde May 20 '18 at 15:29
`Array ( [0] => Array ( [id] => 12 [post_type_id] => 1 [accepted_answer_id] => 32 [creation_date] => 2010-08-17 19:35:07 [score] => 4 [view_count] => 94 [body] => "some text..." [last_editor_user_id] => 0 [last_edit_date] => 0000-00-00 00:00:00 [last_activity_date] => 2010-08-17 19:50:12 [community_owned_date] => 0000-00-00 00:00:00 [title] => Multitasking on iPhone ) ) ` – Lucas Verhoest May 20 '18 at 15:31
1

Your array is inside another array – John Conde May 20 '18 at 15:32
1

It is `$post[0]['title']`. – deEr. May 20 '18 at 15:32
Thanks guys, any idea why it's inside another array? – Lucas Verhoest May 20 '18 at 15:34
Figured it out myself, I used `fetchAll` instead of `fetch`. Thanks again for the help – Lucas Verhoest May 20 '18 at 15:35
That is how the only way is to put several posts. – deEr. May 20 '18 at 15:36

PHP: print_r displays an array but when I use the array, the index is undefined

0 Answers0