How to use PHP functions to implement SMS verification code and login verification for user registration and login?

How to use PHP functions to implement SMS verification code and login verification for user registration and login?

With the development of mobile Internet and the popularity of smartphones, SMS verification codes have become a common method of user registration and login verification. This article will introduce how to use PHP functions to implement the SMS verification code function for user registration and login, and provide corresponding code examples.

1. Registration function

When users register, they need to enter their mobile phone number and click the Send Verification Code button. The background sends a verification code to the mobile phone number by calling the interface of the third-party SMS platform. After receiving the SMS, the user enters the verification code and clicks the registration button for verification.

The following is a code example to implement the user registration function:

<?php
// 生成随机验证码
function generateCode($length = 4)
{
    $chars = '0123456789';
    $code = '';
    for ($i = 0; $i < $length; $i++) {
        $code .= $chars[random_int(0, strlen($chars) - 1)];
    }
    return $code;
}

// 发送验证码
function sendCode($mobile, $code)
{
    // 调用短信平台接口发送短信
    // 代码略
}

// 注册处理
function register()
{
    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        $mobile = $_POST['mobile'];
        $code = generateCode();
        sendCode($mobile, $code);
        // 将验证码存储到session中，方便后续验证
        session_start();
        $_SESSION['code'] = $code;
        echo '验证码已发送，请注意查收！';
    }
}

In the above code, the generateCode function is used to generate a random verification code of a specified length, The sendCode function is used to call the SMS platform interface to send the verification code. The register function is used to process the registration request submitted by the user, generate a random verification code, send the verification code, and store the verification code in the session.

2. Login function

When users log in, they need to enter their mobile phone number and verification code. The background sends a verification code to the mobile phone number by calling the interface of the third-party SMS platform. After receiving the text message, the user enters the verification code for verification.

The following is a code example to implement the user login function:

<?php
// 验证码验证
function verifyCode($code)
{
    session_start();
    if (isset($_SESSION['code']) && $_SESSION['code'] == $code) {
        return true;
    } else {
        return false;
    }
}

// 登录处理
function login()
{
    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        $mobile = $_POST['mobile'];
        $code = $_POST['code'];
        if (verifyCode($code)) {
            // 验证通过，执行登录操作
            echo '登录成功！';
        } else {
            echo '验证码错误！';
        }
    }
}

In the above code, the verifyCode function is used to verify the verification code submitted by the user and the verification code stored in the session. Verification codes are consistent. The login function is used to process the login request submitted by the user. It first verifies the correctness of the verification code. If the verification is passed, the login operation is performed.

The above is the method and corresponding code examples of using PHP functions to implement mobile phone SMS verification codes and login verification for user registration and login. Developers can modify and adjust it according to specific needs and actual situations to suit their own projects.

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