使用 Facebook PHP-SDK 3.x 通过 Codeigniter 2.1.0 注册/登录用户 [英] Using Facebook PHP-SDK 3.x to register/login user with Codeigniter 2.1.0

问题描述

回顾 Facebook API，我对正确的方法有点困惑.我希望用户在使用 Facebook 登录时跳过注册或自动注册.因此，如果他们登录 Facebook，我会收集他们的 ID、电子邮件并在我的用户表中创建记录.

Going over the Facebook API and I'm a bit confused on the right approach. I want users to skip registration, or auto-register them if they sign in with Facebook. So if they sign into Facebook I collect their id, email and create a record in my user table.

如果用户表中已经存在一个 id，他们会跳过自动注册并直接进入会员页面.到目前为止，这是我的代码(取自 Facebook 的 PHP SDK 示例).当我运行注册脚本时，页面显示为空白，我没有被重定向.

If an id exists already in the user table they skip the auto-registration and go directly to the members page. This is my code so far (taken from Facebook's PHP SDK example). When I run the signup script the page shows up as blank, I do not get redirected.

如果我使用以下代码'test'永远不会被打印，那么在要求之后似乎就失败了.

seems to be failing right after the require, if I use the following code 'test' never gets printed.

我正在使用 Codeigniter 并且此脚本是控制器的一部分，这会导致 require 出现问题吗?

I'm using Codeigniter and this script is part of a controller, would that cause a problem with the require?

require 'http://localhost/facebook-php-sdk-6c82b3f/src/facebook.php';
echo "test";

-

public function signup()
    {   
        require 'http://localhost/facebook-php-sdk-6c82b3f/src/facebook.php';

        // Create our Application instance (replace this with your appId and secret).
        $facebook = new Facebook(array(
          'appId'  => 'xxxxxxxxxxxxxxx',
          'secret' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxx',
        ));

        // Get User ID
        $user = $facebook->getUser();

        // We may or may not have this data based on whether the user is logged in.
        //
        // If we have a $user id here, it means we know the user is logged into
        // Facebook, but we don't know if the access token is valid. An access
        // token is invalid if the user logged out of Facebook.

        if ($user)
        {
            try
            {
                // Proceed knowing you have a logged in user who's authenticated.
                $user_profile = $facebook->api('/me');
            }
            catch (FacebookApiException $e)
            {
                error_log($e);
                $user = null;
            }
        }

        // Login or logout url will be needed depending on current user state.
        if ($user)
        {
            $logoutUrl = $facebook->getLogoutUrl();
        }
        else
        {
            $loginUrl = $facebook->getLoginUrl(array('scope' => 'email'));
            redirect($loginUrl);
        }

        print_r($user_profile);


        $this->load->model("user_model");
        $privileges = 1;
        $loginLocation = ip2long($_SERVER['REMOTE_ADDR']);
        $active = 1;
        $this->user_model->add_user($user_profile->id, $user_profile->name, $user_profile->email, $loginLocation, $privileges, $active);

    }

推荐答案

我建议你阅读框架文档.向 CodeIgniter 添加库不是一项艰巨的任务.Facebook 图书馆也不例外.

I suggest you read the framework documentation. Adding a library to CodeIgniter is not a hard task. And Facebook library is no exception.

这是我刚刚提出的快速集成:

Here's a quick integration I've just come up with:

1.创建配置文件:application/config/facebook.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
$config['appId'] = 'app_id';
$config['secret'] = 'app_secret';

2.将 sdk 文件放入库文件夹 application/libraries/ 并将 facebook.php 文件重命名为 Facebook.php 和用这个替换 php 标签:

2.place the sdk files in the libraries folder application/libraries/ and rename the facebook.php file to Facebook.php and replace the php tag with this:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

3.在您的控制器中加载配置文件，然后加载 Facebook 库:

3.in your controller load the config file and then load the Facebook library:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Welcome extends CI_Controller {

    public function __construct()
    {
        parent::__construct();
        // Your own constructor code
        $CI = & get_instance();
        $CI->config->load("facebook",TRUE);
        $config = $CI->config->item('facebook');
        $this->load->library('facebook', $config);
    }

    public function index()
    {
        $user = $this->facebook->getUser();
        if($user) {
            try {
                $user_info = $this->facebook->api('/me');
                echo '<pre>'.htmlspecialchars(print_r($user_info, true)).'</pre>';
            } catch(FacebookApiException $e) {
                echo '<pre>'.htmlspecialchars(print_r($e, true)).'</pre>';
                $user = null;
            }
        } else {
            echo "<a href="{$this->facebook->getLoginUrl()}">Login using Facebook</a>";
        }
    }
}

现在在构造函数方法中，您刚刚初始化了 Facebook 库 (sdk)，可以使用以下命令访问它:$this->facebook.

Now in the constructor method, you have just initialized the Facebook library (sdk) and it can be accessed by using: $this->facebook.

注意事项:

• 您始终可以使用现有库，只需谷歌它
• 一种常见的做法是扩展核心控制器类并在那里添加 Facebook 库初始化.
• 或者创建另一个库，扩展 Facebook 库，在那里加载配置文件，然后自动加载这个新库.

这篇关于使用 Facebook PHP-SDK 3.x 通过 Codeigniter 2.1.0 注册/登录用户的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！