Question

我在库中的类中设置了会话。然后，我尝试从库中的另一个类中获取此会话的值。该值为空。

我查看了CodeIgniter库，以找出问题所在以及StackOverflow的一些类似主题，但最终发现没有什么问题。也许我缺少了一些东西。请帮忙。

// IN THIS CLASS I SET THE SESSION 'fr_phone'

class Form_submit_fr {
    var $CI;
    protected $fr_id;
    protected $fr_data = array();
    public function __construct() {
      $this->CI =& get_instance();

      if (strpos($this->CI->uri->segment(1),'frid') !== false){ 
        $this->fr_id = (int)str_replace('frid','',$this->CI->uri->segment(1));

        $this->fr_data = $this->get_fr_data();

        // add the phone to session
        if (isset($this->fr_data->city_toll) && $this->fr_data->city_toll != '') {
            $fr_phone = $this->fr_data->city_toll;
          } else {
            $fr_phone = $this->fr_data->city_phone;
          }

          // here the session is set
          $this->CI->session->set_userdata('fr_phone', $fr_phone);

          //the result is correct
           echo $this->CI->session->userdata('fr_phone') . ' - fr_phone<br>';

      }
    }
 ....

}

// IN THIS CLASS I NEED TO GET THIS SESSION 'fr_phone'

class P_details {

    protected $page_link;
    protected $fr_data;

    var $CI;

    public function __construct(){
      $this->CI =& get_instance();
        if ($this->CI->uri->segment(2) == false && $this->CI->uri->segment(3) == false) {
          $this->page_link = $this->uri->segment(1)."/";
        } else if ($this->CI->uri->segment(1) != false && $this->CI->uri->segment(2) != false && $this->CI->uri->segment(3) == false) {

                     $this->page_link =  $this->CI->uri->segment(1)."/".$this->CI->uri->segment(2)."/";
        } else if ($this->CI->uri->segment(1) != false && $this->CI->uri->segment(2) != false && $this->CI->uri->segment(3) != false) {

          $this->page_link =  $this->CI->uri->segment(1)."/".$this->CI->uri->segment(2)."/";
          $this->fr_data = $this->get_fr_data($this->CI->uri->segment(3));

        }
      $this->CI->load->model('getDetails_model');


    }

    public function get_p_id($type = '') {


           $details_array = $this->CI->getDetails_model->all_details($this->page_link);

               if (empty($details_array)) {
                  return FALSE;
               }
               else {
                $data['fr_phone'] = '';

                $data['detail'] = $details_array;


                  // get phone from session 
                  // here the session is empty
                  echo $this->CI->session->userdata('fr_phone') . ' - fr_phone<br>';

                  if ($this->CI->session->userdata('fr_phone')) {
                    $data['fr_phone'] = $this->CI->session->userdata('fr_phone');
                  } 
                  if ($this->fr_data != '') {
                    $data['fr_detail'] = $this->fr_data;
                  }
                  return $data;
               }
    }

...

}

这是我的配置文件：

$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 7200;
$config['sess_save_path'] = NULL;
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;


$config['cookie_prefix']    = '';
$config['cookie_domain']    = '';
$config['cookie_path']      = '/';
$config['cookie_secure']    = FALSE;
$config['cookie_httponly']  = FALSE;

这是我的自动加载文件：

$autoload['libraries'] = array('database','session');

我已经在$ config ['sess_save_path']的配置文件中进行了建议的更改。非常感谢。通过这种方式检查时，我也可以看到可写文件夹中的文件和数据库中的条目：

$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 43200;
$config['sess_save_path'] = APPPATH.'writable';
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;

我也使用数据库进行会话：

$config['sess_driver'] = 'database';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 43200;
$config['sess_save_path'] = 'ci_sessions';
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;

在两种情况下，如果我在构造函数或索引函数中的Controller中定义会话，则该会话均有效。我可以在View文件和其他类中获取会话，但是如果我在特定链接的条件下设置了会话，则当我想从库文件夹或视图文件中的类中获取该会话时，该会话始终为空：

//in controller
if (strpos($this->uri->segment(1),'frid') !== false){ 
   ...
$fr_phone = '111-222-3333';
  $this->session->set_userdata('fr_phone', $fr_phone);
   echo $this->session->userdata('fr_phone') // works 
}

当我在“ libraries”文件夹中的“ Class”中调用此会话时，该会话为空：上面的P_details类示例。而且，无法从Librarys文件夹获取在“类”中设置的会话，也无法从Librarys文件夹获取在“另一个类”中的会话。这很奇怪，我无法理解。另外，我尝试在其他控制器上进行会话，但没有成功。

Answer 1

我在一个项目中遇到了类似的问题。经过长时间的尝试，我可以通过以下方式解决问题

1）在config.php中

import { Component, OnInit } from '@angular/core';
import {MatDatepickerModule} from '@angular/material/datepicker';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})

export class ExampleComponent implements OnInit {

  constructor() {
  }
 ngOnInit() {
  }

}

并在根目录中创建名为“可写绝对路径”的文件夹

希望这会有所帮助

Answer 2

这很奇怪，但是我从自动加载中删除了该会话： $ autoload ['libraries'] = array（'database'）; 我添加了session_start（）;在控制器中，我以一种通用方式设置会话：

$ _ SESSION ['fr_phone'] = $ fr_phone;

然后，我可以在任何文件中获取此值。这是错误吗？我尝试通过添加$ this-> load-> library（'session'）;来不使用session_start（）；它没有用。谁能找到这个问题的答案？

我正在使用CodeIgniter 3.0.2

CodeIgniter会话为空

2 个答案: