PHP implementation methods and techniques for mobile phone verification login

PHP implementation methods and techniques for mobile phone verification login

With the popularity of smart phones, more and more websites and applications use mobile phone verification login. To improve user experience and account security. This article will introduce the PHP implementation method and some techniques of mobile phone verification login, and provide relevant code examples.

1. Use mobile phone number to verify login

First, we need to design a user table to store the user's account information, including mobile phone number, password and other fields. When the user logs in, we can ask the user to enter their mobile phone number and password, and then verify the correctness of the mobile phone number and password in the background.

The following is a simple sample code:

<?php
// 获取用户输入的手机号码和密码
$phone = $_POST['phone'];
$password = $_POST['password'];

// 查询用户表中与手机号码匹配的记录
$query = "SELECT * FROM user WHERE phone = '$phone'";
$result = mysqli_query($conn, $query);

// 判断是否有匹配的记录
if (mysqli_num_rows($result) > 0) {
    $row = mysqli_fetch_assoc($result);
    $hashed_password = $row['password'];
    
    // 验证密码的正确性
    if (password_verify($password, $hashed_password)) {
        // 登录成功
        // 将用户信息保存到会话中
        $_SESSION['user_id'] = $row['id'];
        $_SESSION['phone'] = $row['phone'];
        
        // 重定向到用户首页
        header('Location: home.php');
        exit();
    } else {
        // 密码不正确
        echo 'Invalid password';
    }
} else {
    // 手机号码不存在
    echo 'Phone number not found';
}
?>

2. Use SMS verification code to verify login

In addition to password verification, we can also use SMS verification code to verify the user's mobile phone number. After the user enters their mobile phone number, the system will send a text message containing a verification code to the user's mobile phone. Users need to enter the correct verification code to complete the login operation.

The following is a simple sample code:

<?php
// 获取用户输入的手机号码和验证码
$phone = $_POST['phone'];
$code = $_POST['code'];

// 判断用户输入的验证码是否与发送的验证码一致
if ($code == $_SESSION['code']) {
    // 验证成功
    // 查询用户表中与手机号码匹配的记录
    $query = "SELECT * FROM user WHERE phone = '$phone'";
    $result = mysqli_query($conn, $query);

    // 判断是否有匹配的记录
    if (mysqli_num_rows($result) > 0) {
        $row = mysqli_fetch_assoc($result);
        
        // 登录成功
        // 将用户信息保存到会话中
        $_SESSION['user_id'] = $row['id'];
        $_SESSION['phone'] = $row['phone'];
        
        // 重定向到用户首页
        header('Location: home.php');
        exit();
    } else {
        // 手机号码不存在
        echo 'Phone number not found';
    }
} else {
    // 验证码不正确
    echo 'Invalid verification code';
}
?>

3. Some tips

• Generation of verification code: You can use the random number generation method to generate Verification code and save it to the session or send it to the user's phone.
• Prevent brute force cracking: You can set a login limit or a verification code validity time limit to prevent malicious cracking.
• Password encryption: Use a hash algorithm to encrypt and store user passwords. You can use the password_hash() function to encrypt and the password_verify() function to verify the correctness of the password.
• Prevent SQL injection: Use prepared statements or escape special characters to prevent SQL injection attacks.

Summary:

This article introduces the PHP implementation method and some techniques of mobile phone verification login, and provides relevant code examples. By using mobile phone number verification and SMS verification code to verify login, the user's login experience and account security can be improved. In actual development, other technical means can also be combined with other technical means, such as IP restrictions, device fingerprints, etc., to implement more flexible and secure verification measures. I hope this article can be helpful to everyone.

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