Question

我在登录时创建会话，但它没有保存我在会话中存储的变量，也没有将它们传递到其他页面：

控制器代码：

    function CheckDatabase($password) //This function is only run when password validation is correct.//
{
    $username = $this->input->post('Username'); //Sets the username as a $username.//
    $result = $this->User_model->Login($username, $password);

    if($result)
    {
        $sess_array = array();
        foreach($result as $row)
        {
            $sess_array = array( //Makes an array of the data to be stored in the session.//
            'UserID' => $row->UserID,
            'Username' => $row->Username
            );

            $this->session->set_userdata('logged_in', $sess_array); //Sets $sess_array as the session.//
        }

        return TRUE;
   }

    else //Ran if the username or password aren't matched in the CIUsers database. Returns error message.//
    {
        $this->form_validation->set_message('CheckDatabase', 'Invalid login details.');
        return false;
    }
}

同一控制器上的索引功能（应阻止用户返回登录界面，但不会）

    function index() //Default function that is run when this controller is called.//
{

    if($this->session->userdata('logged_in'))
    {
        redirect('Home_controller');
    }

    else
    {
        $this->load->helper(array('form'));
        $this->load->view('Login_view');
    }

}

主视图上的代码（登录后指向哪个浏览器）

<?php echo $UserID .": ".$Username; ?>

我因显示会话数据而收到此错误：

消息：未定义的变量：用户名

文件名：views / Home_view.php

行号：9

Answer 1

要检索会话变量，您必须这样做

{{1}}

Answer 2

在使用之前，你必须从这样的会话中检索它：

$user = $this->session->userdata('logged_in');
$Username = $user['Username'];
$UserID = $user['UserID'];

Answer 3

试试这个

<?php
    if (!defined('BASEPATH'))
        exit('No direct script access allowed');
    class User extends CI_Controller {
            public function __construct() {
            parent::__construct();

        //Here we will check for the session value if it is true then the function will run else it will redirect to login page

            if ($this->session->userdata('logged_in') == FALSE) {
                redirect(site_url('your login page'));
            } else {
              // if there is session value
              redirect(site_url('User/your function name');
            }
    }
}
    ?>

并检查控制器构造中的用户会话

function compChoice() {
    compMath = Math.floor(Math.random() * 3) + 1;

    switch (compMath) {
        case 1: 
            pick = "Rock"
            break;
        case 2:
            pick = "Paper"
            break;
        case 3:
            pick = "Scissors"
            break;
    }

    return pick;
}

function compChoice() {
    var compMath = Math.floor(Math.random() * 3) + 1;

    switch (compMath) {
        case 1: 
            pick = "Rock"
            break;
        case 2:
            pick = "Paper"
            break;
        case 3:
            pick = "Scissors"
            break;
    }

    return pick;
}

function vsChoice() {
    if (player === "Rock") {
        if (computer === "Scissors") {
            console.log("Win.");
        } else if (player === computer) {
            console.log("Tie.");
        } else {
            console.log("Lose.");
        }
    }

    if (player === "Paper") {
        if (computer === "Rock") {
            console.log("Win.");
        } else if (player === computer) {
            console.log("Tie.");
        } else {
            console.log("Lose.");
        }
    }

    if (player === "Scissors") {
        if (computer === "Paper") {
            console.log("Win.");
        } else if (player === computer) {
            console.log("Tie.");
        } else {
            console.log("Lose.");
        }
    }
}

$('#box').on('click', function() {
    player = compChoice();
    computer = compChoice();
    console.log("Players Choice: " + player);
    console.log("Computer Choice: " + computer);
    vsChoice();
});

有关完整的解释，请阅读本教程

http://w3code.in/2015/10/session-handling-in-codeigniter/

Answer 4

 if($result)
{
    $sess_array = array();
    foreach($result as $row)
    {
        $sess_array = array( //Makes an array of the data to be stored in the session.//
        'UserID' => $row[0]->UserID,
        'Username' => $row[0]->Username
        );

        $this->session->set_userdata('logged_in', $sess_array); //Sets $sess_array as the session.//
    }

    return TRUE;

}

CodeIgniter会话数据不起作用

4 个答案: