Question

我正在用PHP创建用户登录名。我编写了以下代码来从数据库中获取一些字段。 id和user_role是整数，是设置为会话变量时唯一返回null的字段。我不知道是什么问题。

$q = "SELECT id, password, last_name, user_role, first_name FROM users WHERE email=?";
$statement = $con->prepare($q);
$statement->bind_param("s", $email);
$statement->execute();
$result = $statement->get_result();

if ($result->num_rows > 0) {
    $result = $result->fetch_assoc();
    $password_hash = $result['password'];
    if (passwordVerify($password, $password_hash)) {
        $_SESSION['user_role'] = $result['user_role']; // set user role to session
        $_SESSION['email'] = $email;
        $_SESSION['id'] = $result['id'];
        $_SESSION['last_name'] = $result['last_name'];
        $_SESSION['first_name'] = $result['first_name'];
        header('Location: index.php');
    } else {
        $_SESSION['msg'] = "Invalid Password/ Email Address";
    }
} else {
    $_SESSION['msg'] = "Invalid Password/ Email Address";
}

当我回显$_SESSION['email']时，它显示电子邮件，但是当我回显$_SESSION['id']时，它什么也不显示。

echo $result['id']显示ID。

修改

采样var_dump($result);和var_dump($_SESSION);输出

array (size=5)
    'user_role' => int 2
    'email' => string 'sample@gmail.com' (length=16)
    'id' => int 30
    'last_name' => string 'Doe' (length=3)
    'first_name' => string 'John' (length=4)

echo $_SESSION['email']输出sample@gmail.com

echo $_SESSION['id']为空

PHP会话变量不存储整数值

0 个答案: