消息：未定义变量：数据 [英] Message: Undefined variable: data

问题描述

当我尝试在CodeIgniter中运行以下应用程序时，会出现以下错误：

When I try to run the following application in CodeIgniter, I get the following error:

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: data
Filename: views/blog.php
Line Number: 1

我一直在试图找出差不多一个小时，我不能让它工作。我的视图如下所示：

I've been trying to figure it out for almost an hour and I can't get it to work. My view looks like this:

<?php foreach($data->result() as $row): ?>
<h1><?php echo $row->title; ?></h1>
<p><?php echo $row->post; ?></p>
<?php endforeach; ?>

我的控制器看起来像这样：

My controller looks like this:

<?php
    class Blog extends CI_Controller {  
    public function index()
    {
        $this->load->database();
        $data = $this->db->get('posts');

        $this->load->helper('url');
        $this->load->view('header');
        $this->load->view('blog', $data);
        $this->load->view('footer');
    }
}

任何人都知道如何解决这个问题？

Anyone know how to fix this?

推荐答案

您必须更改您的控制器和视图

You have to change your controller and view

应该是这样：

$data['post'] = $this->db->get('posts');

并在您的视图中：

<?php foreach($post->result() as $row): ?>
<h1><?php echo $row->title; ?></h1>
<p><?php echo $row->post; ?></p>
<?php endforeach; ?>

codeiginter使用$ data array发送变量到视图。如果你想发送一个视图，把$ data里面$ data ['key'] = $ val;

codeiginter sends variables to view using $data array. If you want to send something to a view, put inside to $data as $data['key'] = $val;

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