How to use PHP and OAuth for QQ login integration

How to use PHP and OAuth for QQ login integration

Introduction:
With the development of social media, more and more websites and applications begin to provide third-party login functions to facilitate users quickly Register and log in. As one of China's largest social media platforms, QQ has also become a third-party login service provided by many websites and applications. This article will introduce the steps on how to use PHP and OAuth for QQ login integration, with code examples.

Step 1: Register as a QQ open platform developer
Before starting to integrate QQ login, we need to register as a developer of the QQ open platform to obtain the developer's relevant information and keys. The specific steps are as follows:

1. Visit the official website of QQ Open Platform (https://open.qq.com/).
2. Click "Account Management" in the upper right corner and log in through your QQ account.
3. Click "Application Management" and then click "Create Application".
4. Fill in the basic information of the application, including application name, application type, application description, etc., and submit the application.
5. After passing the review, you will get an App ID and App Key, which will be the key information we need for QQ login integration.

Step 2: Install and configure the OAuth library
In PHP, there are many libraries that have implemented the OAuth protocol. We can directly use these libraries for QQ login integration. This article will use PHPLeague/oauth2-client as an example to illustrate.

1. Use Composer to install the OAuth library:

   composer require league/oauth2-client

2. Create a config.php file and fill in the relevant configuration information:

   <?php
   return [
    'qq' => [
        'clientId' => 'your-qq-app-id',
        'clientSecret' => 'your-qq-app-key',
        'redirectUri' => 'your-redirect-url'
    ]
   ];

Step 3: Write the code for the login and callback page

1. Create the login.php file and write the following code:

   <?php
   require 'vendor/autoload.php';
   
   $config = include 'config.php';
   
   $provider = new LeagueOAuth2ClientProviderGenericProvider([
    'clientId'                => $config['qq']['clientId'],
    'clientSecret'            => $config['qq']['clientSecret'],
    'redirectUri'             => $config['qq']['redirectUri'],
    'urlAuthorize'            => 'https://graph.qq.com/oauth2.0/authorize',
    'urlAccessToken'          => 'https://graph.qq.com/oauth2.0/token',
    'urlResourceOwnerDetails' => 'https://graph.qq.com/oauth2.0/me',
   ]);
   
   $authorizationUrl = $provider->getAuthorizationUrl();
   $_SESSION['oauth2state'] = $provider->getState();
   
   header("Location: $authorizationUrl");

2. Create the callback.php file and write the following code:

   <?php
   session_start();
   
   require 'vendor/autoload.php';
   
   $config = include 'config.php';
   
   $provider = new LeagueOAuth2ClientProviderGenericProvider([
    'clientId'                => $config['qq']['clientId'],
    'clientSecret'            => $config['qq']['clientSecret'],
    'redirectUri'             => $config['qq']['redirectUri'],
    'urlAuthorize'            => 'https://graph.qq.com/oauth2.0/authorize',
    'urlAccessToken'          => 'https://graph.qq.com/oauth2.0/token',
    'urlResourceOwnerDetails' => 'https://graph.qq.com/oauth2.0/me',
   ]);
   
   if (empty($_GET['state']) || ($_GET['state'] !== $_SESSION['oauth2state'])) {
    unset($_SESSION['oauth2state']);
    exit('Invalid state');
   }
   
   $token = $provider->getAccessToken('authorization_code', [
    'code' => $_GET['code']
   ]);
   
   $ownerDetails = $provider->getResourceOwner($token);
   
   $qqId = $ownerDetails->getId();
   
   // 将qqId保存到数据库，或进行其他操作
   
   echo 'QQ登录成功！';

Step 4: Test the login function

1. Add on the login page A QQ login link that allows users to click to log in:

   <a href="login.php">使用QQ登录</a>

2. Create a MySQL database and create a table named users to save the user's QQ ID.

3. In the callback page, save the user’s QQ ID to the database:

   // 将qqId保存到数据库中
   $conn = new mysqli('localhost', 'your-username', 'your-password', 'your-database');
   
   $qqId = $ownerDetails->getId();
   
   $sql = "INSERT INTO users (qq_id) VALUES ('$qqId')";
   $conn->query($sql);

Through the above steps, we successfully implemented the integration of QQ login . After the user clicks the login link, the page will jump to the QQ login interface. After the user completes the authorization, it will jump back to the callback page we specified, and we can obtain the user's QQ ID and save it to the database.

Summary:
This article introduces the steps of how to use PHP and OAuth for QQ login integration, and comes with code examples. Through QQ login integration, we can easily realize the function of quick registration and login for users and improve the user experience. Hope this article helps you!

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