PHP - Facebook API 请求许可

PHP - Facebook API ask for permission

本文关键字：请求 许可 API Facebook PHP      更新时间：2023-09-26

我正在尝试将玩家登录到Facebook。我正在使用Javascript SDK登录用户，我直接从facebook页面复制了脚本：

登录页面 

<!DOCTYPE html>
<html>
<head>
<title>Facebook Login JavaScript Example</title>
<meta charset="UTF-8">
</head>
<body>
<script>
  // This is called with the results from from FB.getLoginStatus().
  function statusChangeCallback(response) {
    console.log('statusChangeCallback');
    console.log(response);
    // The response object is returned with a status field that lets the
    // app know the current login status of the person.
    // Full docs on the response object can be found in the documentation
    // for FB.getLoginStatus().
    if (response.status === 'connected') {
      // Logged into your app and Facebook.
      testAPI();
    } else if (response.status === 'not_authorized') {
      // The person is logged into Facebook, but not your app.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into this app.';
    } else {
      // The person is not logged into Facebook, so we're not sure if
      // they are logged into this app or not.
      document.getElementById('status').innerHTML = 'Please log ' +
        'into Facebook.';
    }
  }
  // This function is called when someone finishes with the Login
  // Button.  See the onlogin handler attached to it in the sample
  // code below.
  function checkLoginState() {
    FB.getLoginStatus(function(response) {
      statusChangeCallback(response);
    });
  }
  window.fbAsyncInit = function() {
  FB.init({
    appId      : '260828287441151',
    cookie     : true,  // enable cookies to allow the server to access 
                        // the session
    xfbml      : true,  // parse social plugins on this page
    version    : 'v2.1' // use version 2.1
  });
  // Now that we've initialized the JavaScript SDK, we call 
  // FB.getLoginStatus().  This function gets the state of the
  // person visiting this page and can return one of three states to
  // the callback you provide.  They can be:
  //
  // 1. Logged into your app ('connected')
  // 2. Logged into Facebook, but not your app ('not_authorized')
  // 3. Not logged into Facebook and can't tell if they are logged into
  //    your app or not.
  //
  // These three cases are handled in the callback function.
  FB.getLoginStatus(function(response) {
    statusChangeCallback(response);
  });
  };
  // Load the SDK asynchronously
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "//connect.facebook.net/en_US/sdk.js";
    fjs.parentNode.insertBefore(js, fjs);
  }(document, 'script', 'facebook-jssdk'));
  // Here we run a very simple test of the Graph API after login is
  // successful.  See statusChangeCallback() for when this call is made.
  function testAPI() {
    console.log('Welcome!  Fetching your information.... ');
    FB.api('/me', function(response) {
      console.log('Successful login for: ' + response.name);
      document.getElementById('status').innerHTML =
        'Thanks for logging in, ' + response.name + '!';
    });
  }
</script>
<!--
  Below we include the Login Button social plugin. This button uses
  the JavaScript SDK to present a graphical Login button that triggers
  the FB.login() function when clicked.
-->
<fb:login-button scope="public_profile,email" onlogin="checkLoginState();">
</fb:login-button>
<div id="status">
</div>
<a href="postface.php">Try to post</a>
</body>
</html>

我想要的是，当我按下该链接时，我会转到另一个页面，该页面应该与Facebook进行一些服务器端编程。

波斯特斯.php

    <?php
    require_once('vendor/autoload.php');
    use Facebook'FacebookJavaScriptLoginHelper;
    use Facebook'FacebookSession;
    FacebookSession::setDefaultApplication('YOUR_APP_ID', 'YOUR_APP_SECRET');
    $helper = new FacebookJavaScriptLoginHelper();
    try {
      $session = $helper->getSession();
    } catch(FacebookRequestException $ex) {
      // When Facebook returns an error
      echo "Error 1: " . $ex;
    } catch('Exception $ex) {
      // When validation fails or other local issues
      echo "Error 2: " . $ex;
    }
    if ($session) {
      // Logged in
      echo "The user is logged in!!";
    } else
        echo "not working";
?>

但是，上述方法不起作用。$session变量只是空？我不明白这一点，因为Facebook说你应该使用那个确切的脚本(我也从他们那里复制(来验证登录，如果你使用javascript，我做到了？

有什么指示我做错了什么吗？javascript页面上的登录部分工作正常，它说我已登录。是另一页上的服务器端部分无法验证用户。

提前致谢

这里的问题是，使用JavaScript SDK登录会将access_token保存到cookie中，而Facebook PHP SDK正在查看不知道cookie的session。

您需要从$_COOKIE中提取access_token，然后在第二页上使用它来创建会话。

相关文章：