Question

您好，我有一个简单的MySQL / PHP登录系统，几乎全部从本指南复制而成：https://www.tutorialrepublic.com/php-tutorial/php-mysql-login-system.php

我已在用户表user.admin中添加了一个布尔字段

我这样连接到各种数据库（“ config.php”）：

public class CharacterController2D : MonoBehaviour
{
    public void Move(InputInfo inputInfo)
    {
        // Use inputInfo to decide how to move.
    }
}

我在页面顶部有OnLateUpdateOnAnalogStickInput，并尝试运行插入查询（允许root @ localhost进行此操作，但不允许guest @ localhost）。

我确定admin会话变量设置正确（我在IF块中添加了一条调试行，以便在命中该行并且能够重定向时进行重定向），但是当我以admin身份登录时，任何insert命令都会返回此行错误：

<?php /* Database credentials */ define('SERVER', 'localhost'); define('GUEST_USERNAME', 'guest'); define('GUEST_PASSWORD', ''); define('ADMIN_USERNAME', 'root'); define('ADMIN_PASSWORD', 'pw'); define('USERS_DATABASE_NAME', 'users'); define('OTHER_DB_NAME', 'db'); //is an admin logged in? if(isset($_SESSION["loggedin"]) && $_SESSION["loggedin"] === true && $_SESSION["admin"] === 1){ /* Attempt to connect to MySQL database */ $link = mysqli_connect(SERVER, ADMIN_USERNAME, ADMIN_PASSWORD, USERS_DATABASE_NAME); // Check connection if($link === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); } /* Attempt to connect to MySQL database */ $db = mysqli_connect(SERVER, ADMIN_USERNAME, ADMIN_PASSWORD, OTHER_DB_NAME); // Check connection if($db === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); } }else{ /* Attempt to connect to MySQL database */ $link = mysqli_connect(SERVER, GUEST_USERNAME, GUEST_PASSWORD, USERS_DATABASE_NAME); // Check connection if($link === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); } /* Attempt to connect to MySQL database */ $db = mysqli_connect(SERVER, GUEST_USERNAME, GUEST_PASSWORD, OTHER_DB_NAME); // Check connection if($db === false){ die("ERROR: Could not connect. " . mysqli_connect_error()); } } ?>。

这是使用插入查询的示例注册页面：

require_once "config.php";

当我说INSERT command denied to user 'guest'@'localhost' for table 'blabla'时，配置页面的链接是什么？内存中是否已经存在<?php // Include config file require_once "../scripts/config.php"; // Initialize the session session_start(); // Check if the user is admin otherwise banish from this page if(isset($_SESSION["loggedin"]) && $_SESSION["loggedin"] === true && $_SESSION["admin"] === 1){ // Processing form data when form is submitted // Scaled down for this example if($_SERVER["REQUEST_METHOD"] == "POST"){ $username = $_POST["username"]; $password = $_POST["password"]); $admin = (ISSET($_POST["admin_check"])?"'1'":"'0'"); // Prepare an insert statement $sql = "INSERT INTO users (username, password, admin) VALUES ('".$username."', '".$password."', ".$admin.")"; if (mysqli_query($link, $sql)) { echo "New record created successfully"; } else { //THIS LINE SHOWS THE ERROR echo "Error: " . $sql . "<br>" . mysqli_error($link); } // Close connection mysqli_close($link); } }else{ header("location: login.php"); exit; } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Sign Up</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css"> <link rel="stylesheet" href="styles.css"> </head> <body> <div class="wrapper"> <h2>Sign Up</h2> <p>Please fill this form to create an account.</p> <form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post"> <div class="form-group <?php echo (!empty($username_err)) ? 'has-error' : ''; ?>"> <label>Username</label> <input type="text" name="username" class="form-control" value="<?php echo $username; ?>"> <span class="help-block"><?php echo $username_err; ?></span> </div> <div class="form-group <?php echo (!empty($password_err)) ? 'has-error' : ''; ?>"> <label>Password</label> <input type="password" name="password" class="form-control" value="<?php echo $password; ?>"> <span class="help-block"><?php echo $password_err; ?></span> </div> <div class="form-group <?php echo (!empty($confirm_password_err)) ? 'has-error' : ''; ?>"> <label>Confirm Password</label> <input type="password" name="confirm_password" class="form-control" value="<?php echo $confirm_password; ?>"> <span class="help-block"><?php echo $confirm_password_err; ?></span> </div> <div class="form-group"> <label>Admin?</label> <input type="checkbox" name="admin_check"> </div> <div class="form-group"> <input type="submit" class="btn btn-primary" value="Submit"> <input type="reset" class="btn btn-default" value="Reset"> </div> <p>Already have an account? <a href="login.php">Login here</a>.</p> </form> </div> </body> </html>和require_once变量的版本没有被覆盖？如果是这样，我如何在管理员登录时将用户更改为root？

Answer 1

好让我失望。我只是交换了前两行：

// Include config file
require_once "../scripts/config.php";

// Initialize the session
session_start();

成为：

// Initialize the session
session_start();

// Include config file
require_once "../scripts/config.php";

Voila！

MySQL / PHP登录系统更改数据库用户？

1 个答案: