Codeigniter：如何将 foreach 语句发送到视图？

Question

控制器：

$categorys = array(
    '1234' => array('Car Audio','Car Subwoofers'), 
    '12'   => array('Car Stereos')
)

$category_id = $this->input->get('category_id');
$product_id  = $this->input->get('modelNumber');

if (array_key_exists($category_id,$categorys)) 
{
        foreach($categorys[$category_id] as $key => $value) 
    {
            echo $value;
    }
}

如何在视图文件中回显 foreach 语句输出的 $value ？

Answer 1

您可以将整个数组传递给视图并直接在视图中运行 foreach，例如：

$data['array'] = array(/* etc. */);
$this->load->view('view', $data);

在视图中：

<?php foreach($array as $key => $value): ?>
  <p>The key is <?php echo $key; ?><br>
  The value is <?php echo $value; ?></p>
<?php endforeach; ?>

Answer 2

控制器

if (array_key_exists($category_id,$categorys)) 
{
     $query['cats'] = $categorys[$category_id];
}

视图

foreach($cats as $key => $value) 
{
   echo $value;
}