Php Codeigniter分页变量未定义

我是CodeIgniter框架的新手，我试图用分页显示结果，但我有一个分页变量

未定义

这是我的型号：

class Campaign_model extends  CI_Model {

public function __construct() {
    parent::__construct();
}

public function get_campaign_lists($limit, $start) {
    $sql = 'SELECT * FROM ch_campaigns LIMIT '.$limit.', '.$start;
    $query = $this->db->query($sql);
    return $query->result();
}
}

class Pagination extends CI_Controller {

public function __construct() {
    parent::__construct();
    $this->load->helper('url');
    $this->load->database();
    $this->load->library('pagination');
    $this->load->model('campaign_model');
}

public function index() {

    //pagination settings
    $config['base_url'] = site_url('pagination/index');
    $config['total_rows'] = $this->db->count_all('ch_campaigns');
    $config['per_page'] = "5";
    $config["uri_segment"] = 1;
    $choice = $config["total_rows"] / $config["per_page"];
    $config["num_links"] = floor($choice);

    //config for bootstrap pagination class integration
    $config['full_tag_open'] = '<ul class="pagination">';
    $config['full_tag_close'] = '</ul>';
    $config['first_link'] = false;
    $config['last_link'] = false;
    $config['first_tag_open'] = '<li>';
    $config['first_tag_close'] = '</li>';
    $config['prev_link'] = '&laquo';
    $config['prev_tag_open'] = '<li class="prev">';
    $config['prev_tag_close'] = '</li>';
    $config['next_link'] = '&raquo';
    $config['next_tag_open'] = '<li>';
    $config['next_tag_close'] = '</li>';
    $config['last_tag_open'] = '<li>';
    $config['last_tag_close'] = '</li>';
    $config['cur_tag_open'] = '<li class="active"><a href="#">';
    $config['cur_tag_close'] = '</a></li>';
    $config['num_tag_open'] = '<li>';
    $config['num_tag_close'] = '</li>';

    $this->pagination->initialize($config);
    $data['page'] = ($this->uri->segment(1)) ? $this->uri->segment(1) : 0;

    //call the model function to get the department data
    $data['campaignlist'] = $this->campaign_model->get_campaign_list($config["per_page"], $data['page']);           

    $data['pagination'] = $this->pagination->create_links();

    //load the department_view
    $this->load->view('campaign_view',$data);
}
}

<div class="main-container-footer text-center">
    <?php echo $pagination; ?>
</div>

控制器：

class Campaign_model extends  CI_Model {

public function __construct() {
    parent::__construct();
}

public function get_campaign_lists($limit, $start) {
    $sql = 'SELECT * FROM ch_campaigns LIMIT '.$limit.', '.$start;
    $query = $this->db->query($sql);
    return $query->result();
}
}

class Pagination extends CI_Controller {

public function __construct() {
    parent::__construct();
    $this->load->helper('url');
    $this->load->database();
    $this->load->library('pagination');
    $this->load->model('campaign_model');
}

public function index() {

    //pagination settings
    $config['base_url'] = site_url('pagination/index');
    $config['total_rows'] = $this->db->count_all('ch_campaigns');
    $config['per_page'] = "5";
    $config["uri_segment"] = 1;
    $choice = $config["total_rows"] / $config["per_page"];
    $config["num_links"] = floor($choice);

    //config for bootstrap pagination class integration
    $config['full_tag_open'] = '<ul class="pagination">';
    $config['full_tag_close'] = '</ul>';
    $config['first_link'] = false;
    $config['last_link'] = false;
    $config['first_tag_open'] = '<li>';
    $config['first_tag_close'] = '</li>';
    $config['prev_link'] = '&laquo';
    $config['prev_tag_open'] = '<li class="prev">';
    $config['prev_tag_close'] = '</li>';
    $config['next_link'] = '&raquo';
    $config['next_tag_open'] = '<li>';
    $config['next_tag_close'] = '</li>';
    $config['last_tag_open'] = '<li>';
    $config['last_tag_close'] = '</li>';
    $config['cur_tag_open'] = '<li class="active"><a href="#">';
    $config['cur_tag_close'] = '</a></li>';
    $config['num_tag_open'] = '<li>';
    $config['num_tag_close'] = '</li>';

    $this->pagination->initialize($config);
    $data['page'] = ($this->uri->segment(1)) ? $this->uri->segment(1) : 0;

    //call the model function to get the department data
    $data['campaignlist'] = $this->campaign_model->get_campaign_list($config["per_page"], $data['page']);           

    $data['pagination'] = $this->pagination->create_links();

    //load the department_view
    $this->load->view('campaign_view',$data);
}
}

<div class="main-container-footer text-center">
    <?php echo $pagination; ?>
</div>

---

我认为您应该在controller方法

index（）

的开头添加以下行：

public function index() {

    $data = array();

    // [...] index method implementation.
}

---

我认为您应该在controller方法

index（）

的开头添加以下行：

public function index() {

    $data = array();

    // [...] index method implementation.
}

---

---

你得到的确切错误消息是什么？@low_rents更新了这个问题。@PedroOrdonez，期待这样的错误消息似乎是合理的。查看您的代码，当您试图在``中使用它时，您并没有在任何地方定义

$pagination

变量。是的，我知道，但我只是在学习这个教程[link]，你得到的确切错误消息是什么？@low_rents更新了这个问题。@PedroOrdonez，期待这样的错误消息似乎是合理的。查看您的代码，当您试图在``中使用它时，您并没有在任何地方定义

$pagination

变量。是的，我知道，但我只是在遵循这个教程[link]，如果你改变行：

$this->load->view（'campaign_view'，$data）导入
打印变量导出（$data，true）$此->加载->查看（'campaign_view'，$data）？控制台中的输出是什么？我认为
打印变量导出（$data，true）是不可能的未生成任何输出。在我看来，你犯了一些一般性的错误（在编码、上传等方面）很抱歉，现在有一个输出
array（'page'=>'index'，'campaignlist'=>array（0=>stdClass:：\u set\u state（array（'c_id'=>'1'，'c_活动名称'=>'样本'，'c_客户名称'=>''，'c_开始日期'=>''，'c_结束日期'=>''，'c_状态'=>''，'c_创建日期'=>'0000-00-00'，'c_修改日期'=>'0000-00-00'，），，，，，，，，，'pagination'=>，）
现在没有错误，但分页仍然没有显示OK。感谢您花时间教我如何使用打印变量导出（）；：）如果您更改行：
$this->load->view（'campaign_view'，$data）导入
打印变量导出（$data，true）$此->加载->查看（'campaign_view'，$data）？控制台中的输出是什么？我认为
打印变量导出（$data，true）是不可能的未生成任何输出。在我看来，你犯了一些一般性的错误（在编码、上传等方面）很抱歉，现在有一个输出
array（'page'=>'index'，'campaignlist'=>array（0=>stdClass:：\u set\u state（array（'c_id'=>'1'，'c_活动名称'=>'样本'，'c_客户名称'=>''，'c_开始日期'=>''，'c_结束日期'=>''，'c_状态'=>''，'c_创建日期'=>'0000-00-00'，'c_修改日期'=>'0000-00-00'，），，，，，，，，，'pagination'=>，）
现在没有错误，但分页仍然没有显示OK。感谢您抽出时间教我如何使用print var_export（）；：）