get intro-image from article?

Question

I do not get the images out of my article. The article var is initialized, but the images and pictures vars seem to be empty. Any hints what I do wrong here?

<?php
   $id = JFactory::getApplication()->input->getInt('id');
   $article = JTable::getInstance("content");
   $article->load($id);
   $images = $article->item->images;
   echo $images;
   $pictures = json_decode($images);
   echo $pictures;
?>

<?php echo $pictures->image_intro; ?>

Answer 1

When developing, error reporting should be enabled. You'll see this:

Notice: Undefined property: Joomla\CMS\Table\Content::$item

Access the images like this:

$images = $article->images;