$data['products'][] = array(
// viewed start
'viewed' => $result['viewed'],
// viewed end
'product_id' => $result['product_id'],
'image' => $image,
'name' => $result['name'],
'model' => $result['model'],
'price' => $result['price'],
'category' => $category,
'special' => $special,
'quantity' => $result['quantity'],
'status' => $result['status'] ? $this->language->get('text_enabled') : $this->language->get('text_disabled'),
'edit' => $this->url->link('catalog/product/edit', 'token=' . $this->session->data['token'] . '&product_id=' . $result['product_id'] . $url, true)
);
<td class="text-left"><?php echo $column_category; ?></td>
<td class="text-left">Просмотры</td><!-- это добавили -->
<td class="text-left">
<?php foreach ($categories as $category) { ?>
<?php if (in_array($category['category_id'], $product['category'])) { ?>
<?php echo $category['name'];?><br>
<?php } ?>
<?php } ?></td>
<td><?php echo $product['viewed']; ?></td><!-- и это -->