Question

hye ..现在使用session..right进行多级登录现在我在此行中收到错误未定义索引userId ..当我尝试输入正确的用户名和密码时，它确实显示警告消息并显示未定义索引错误

if ($data['role' == "partner"]) {

        $_SESSION['partner'] = $data['userId'];
        ?> 
        <script>alert('You are log as industrial partner ...')
        window.location='index.html'</script> 
        <?php
    } else if ($data['role' == "student"]) {

        $_SESSION['student'] = $data['userId'];
        ?> 
        <script>alert('You are log as student ...')
        window.location='index.html'</script>
         <?php

我哪里错了..？有人可以帮助我..这是我的完整代码

<?php
ini_set('display_errors',1);
error_reporting(E_ALL);

SESSION_start();
include ('Connections/connect.php');



if(isset($_POST['submit']))
{

    $username = $mysqli->real_escape_string($_POST['txtUsername']);
    $password = $mysqli->real_escape_string($_POST['txtPassword']);

    if ($username == "" || $password == "") {
    ?> 
    <script> alert('Please enter username and password ...') 
    window.location='mainpage.html'</script> 
    <?php
} else {

     $query = ("SELECT username,password FROM tbluser   WHERE  username='$username' AND password='$password'");
     $result = $mysqli->query($query);
     $data = $result->fetch_array();
     $count = $result->num_rows;

     if ($count>0) {



        if ($data['role' == "partner"]) {

        $_SESSION['partner'] = $data['userId'];
             ?> 
            <script>alert('You are log as industrial partner ...')
            window.location='index.html'</script> 
            <?php
        } else if ($data['role' == "student"]) {

            $_SESSION['student'] = $data['userId'];
            ?> 
            <script>alert('You are log as student ...')
            window.location='index.html'</script>
             <?php


         } else {

            ?> 
             <script>alert('Username or password does not match ...')
            window.location='mainpage.html'</script> 
            <?php

       }

 }
}
}
?>

Answer 1

您只从MySQL获取“用户名”和“密码”，因此$data数组只包含这两个键。

使用会话的未定义索引

1 个答案: