Question

我已经记录了mu用户（在login.php中）并开始会话，然后重定向到另一个页面（accueil.php）/

在login.php中：我的会话存在，我的cookie存在。在accueil.php中：我的会话存在，我的cookie不存在。

==＆GT;我在第二页的顶部开始了我的会话./

==＆GT;我试着用不同的方式徒劳地使用位置：
标题（＆＃39;位置：http://localhost/monsite/accueil.php＆＃39;）; /

OR

标题（＆＃39;位置：accueil.php＆＃39;）;

==＆gt;无论如何：它返回＆＃34;未定义的索引用户名＆＃34;。

我不明白。请问有什么想法吗？！

这是我的代码：

Login.php：

    $username = $_GET['username'];
    $password = $_GET['password'];


    $sql = $connection->query("SELECT username, password FROM login WHERE username = '$username' && `password`= '$password';");
    while ($result = $sql->fetch()){
        $data = array('username' => $result['username'],
                      'password' => $result['password']);
    }
    try{
        if($data['username'] !== $username && $data['password'] !== $password )  {
            throw new Exception('Login incorrect', 500);
        }
        else{
            session_start();
            $_SESSION['username'] = $username;
            $_SESSION['password'] = $password;

            setcookie('maSession', $_SESSION['username'], time()+3600 , '/');
            header('Location: http://localhost/monsite/accueil.php');

        }
    }
    catch(Exception $e){
        header("HTTP/1.1 500 Internal Server Error");
        echo 'error: '.$e->getMessage();
    }

Accueil.php： ``

header('Access-Control-Allow-Origin: *');
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

include_once('accueil.php');
require_once('db.php');

if ($_SERVER['REQUEST_METHOD'] == 'GET') {
    $connection = new PDO("mysql:host=$HOST;dbname=$DBNAME", $USER, $PASS);

    if(isset($_SESSION)) {
        $username = $_SESSION['username'];
        echo $username;
    }
    else{
        echo 'no session';
    }
}

- ＆gt; var_dump（$ _ SESSION）：返回空数组。

- ＆gt; $ _ SESSION [＆＃39;用户名＆＃39;]：返回未定义的索引undername。

谢谢！

Answer 1

尝试

<?php
//Check session if not already started, then start it.
if(session_id() == '')
{
    session_start();
}

header('Access-Control-Allow-Origin: *');
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization");

include_once('accueil.php');
require_once('db.php');

if ($_SERVER['REQUEST_METHOD'] == 'GET') {
    $connection = new PDO("mysql:host=$HOST;dbname=$DBNAME", $USER, $PASS);

 // Check session 'username' it was not empty
    if(!empty($_SESSION['username'])) {
        $username = $_SESSION['username'];
        echo $username;
    }
    else{
        echo 'no session';
    }
}

?>

$ _SESSION存在，但是为空。为什么呢？

1 个答案:

尝试