我终于决定开始使用准备好的语句。虽然,我对正确与否的判断是50/50。我正在尝试使用准备好的语句创建登录页面。不过,似乎除了用户名$_SESSION之外,它没有检索任何会话值。

这是我的代码:

$username = $_POST['username'];
        $password = md5($_POST['password']);

        $sql = "SELECT * FROM users WHERE BINARY username=? AND BINARY password=?";
            if($stmt = $db->prepare($sql)){
                $stmt->bind_param("ss",$username,$password);
                $stmt->execute();
                $result = $stmt->get_result();
                $num_rows = $result->num_rows;

                if($num_rows >= 1){

                    $_SESSION['loggedin'] = $username;
                    $_SESSION['country'] = $num_rows['country'];
                    $_SESSION['email'] = $num_rows['email'];
                    $_SESSION['avatar'] = $num_rows['u_avatar'];
                    $_SESSION['is_gm'] = $num_rows['is_gm'];
                    $_SESSION['user_lvl'] = $num_rows['user_lvl'];
                    $_SESSION['totalposts'] = $num_rows['post_total'];
                    $_SESSION['totalcoins'] = $num_rows['coins_total'];
                    $_SESSION['totalvotes'] = $num_rows['vote_total'];
                    $_SESSION['secquest'] = $num_rows['sec_quest'];
                    $_SESSION['secanswer'] = $num_rows['sec_answer'];
                    $_SESSION['join_date'] = $num_rows['join_date'];

                    header("Location: /index.php");
                    exit();

                } else {
                    echo "<p class='error_msg'>No accounts could be found with the given credentials.</p>";
                }

                $stmt->free_result();
                $stmt->close();
                $db->close();
            }

最佳答案

就像上面的注释一样,在使用->get_result()之后,该获取以下内容了:

$stmt->execute();
$result = $stmt->get_result();
$num_rows = $result->num_rows;

if($num_rows >= 1) {
    $row = $result->fetch_assoc(); // fetch it first
    $_SESSION['loggedin'] = $username;
    $_SESSION['country'] = $row['country'];
    $_SESSION['email'] = $row['email'];
    $_SESSION['avatar'] = $row['u_avatar'];
    $_SESSION['is_gm'] = $row['is_gm'];
    $_SESSION['user_lvl'] = $row['user_lvl'];
    $_SESSION['totalposts'] = $row['post_total'];
    $_SESSION['totalcoins'] = $row['coins_total'];
    $_SESSION['totalvotes'] = $row['vote_total'];
    $_SESSION['secquest'] = $row['sec_quest'];
    $_SESSION['secanswer'] = $row['sec_answer'];
    $_SESSION['join_date'] = $row['join_date'];

    header('Location: /index.php');
    exit();
}


使用$num_rows['join_date']没有任何意义,因为您已经知道这会产生实际的行数,它不包含所需的值。您已经检查了它是否包含数字if($num_rows >= 1) {

旁注:是时候放弃md5并开始使用password_hash + password_verify组合了。

关于php - session 准备声明,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/39781691/

10-12 12:53
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