Question

Facebook过去几天是否随机更改了他们的API？我让我的网站与Facebook API完美配合，现在突然间它根本不起作用。不，我没有改变任何东西，它确实只是昨天决定不再重定向......它似乎只是尝试连接几次然后显示此页面：

“页面未正确重定向 Firefox检测到服务器正在以永远不会完成的方式重定向此地址的请求。 *此问题有时可能是由禁用或拒绝接受引起的饼干“。

无论如何，这里有一些代码可以解决这个问题：P（是的，我确实拥有真正的应用程序ID并且已经到位）这是fbLogin_member.php文件，您可以在点击登录链接后查找该文件：

$app_id = "my id #";
$app_secret = "my secret id";
$my_url = "http://www.sitedomain.com/confirmlogin_fb_member.php";

if (empty($code)) {
    $dialog_url = "http://www.facebook.com/dialog/oauth?client_id=". $app_id ."&redirect_uri=". urlencode($my_url) ."&scope=email";
    echo "<script> top.location.href='". $dialog_url ."'</script>";
}

$code = $_REQUEST['code'];

这是confirmlogin_fb_member.php文件：

//if user denies access to your website, take him to your manual login page    
// if ($_GET['error']) {
    // header("Location: memberlogin.php");
    // exit;
// }

require_once('config/dbconfig.php');

$app_id = "my id #";
$app_secret = "my secret id";
$my_url = "http://www.sitedomain.com/confirmlogin_fb_member.php";


$code = $_GET['code'];

$token_url = "https://graph.facebook.com/oauth/access_token?client_id="
    . $app_id . "&redirect_uri=" . urlencode($my_url) . "&client_secret="
    . $app_secret . "&code=" . $code;


// request access token
//use curl and not file_get_contents()
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_URL, $token_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$access_token = curl_exec($ch);
curl_close($ch);

$graph_url = "https://graph.facebook.com/me?" . $access_token;

// request user data using the access token
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_URL, $graph_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$temp_user = curl_exec($ch);
curl_close($ch);

//decode the json array to get user data
$user = json_decode($temp_user);

//store user data
$u = $user->name;
$e = $user->email;
$fb_id = $user->id;
$username = $user->username;
$picture = 'https://graph.facebook.com/'. $fb_id .'/picture';

//check if user has already signed up before
$insert = true;
$result = mysql_query("SELECT * FROM members") or die(mysql_error());

while ($row = mysql_fetch_array($result)) {
    //if username already exists, do not insert
    if (($row['name'] == $u) && ($row['userType'] == "facebook_user")) {
        $insert = false;
    }
}

// Random Password Generator
$chars = "abcdefghijkmnopqrstuvwxyz023456789";
srand((double)microtime()*1000000);
$i = 0;
$pass = '' ;

while ($i <= 7) {
    $num = rand() % 33;
    $tmp = substr($chars, $num, 1);
    $pass = $pass . $tmp;
    $i++;
}
// end generator

// if new user, insert user details in your mysql table
if ($insert) {
    mysql_query("INSERT INTO members(name, fb_username, password, email, profile_pic, userType) VALUES('$u', '$username', '$pass' , '$e', '$picture', 'facebook_user')") or die(mysql_error()); 
}

//login user
if (!session_start()) session_start();
$_SESSION['in'] = true;
$_SESSION['userName'] = $u;
$_SESSION['userType'] = "facebook_user";
$_SESSION['userEmail'] = $e;

//take user to his/her homepage
header("Location: layout.php");

最后，这是调用Facebook API会话的layout.php的顶部：

session_start();
require_once('config/dbconfig.php');
require_once('facebook/facebook.php');

if (isset($_REQUEST['logout'])) {
    unset($_SESSION['in']);
    unset($_SESSION['userName']);
    unset($_SESSION['userType']);
    unset($_SESSION['userEmail']);
    session_destroy();
    header("Location: layout.php");
}

$session = $_SESSION['in'];
if (!$session) {
    $login = '<a href="fbLogin_member.php" class="fbLogin">Login with Facebook</a>';

    $tooltipMsg = '<p>You must <strong>Log in</strong> to vote.</p>';
} else {
    $sessionUser = $_SESSION['userName'];
    $result = mysql_query("SELECT * FROM `members` WHERE name = '$sessionUser'") or die('Query failed: ' . mysql_error() . "<br />\n$sql");

    if ($result) {
        $sessionRow = mysql_fetch_array($result);
        $sessionUserid = $sessionRow['memberid'];
    }

    if ($sessionRow['userType'] == "facebook_user") {
        $facebook = new Facebook(array(
                                    'appId'  => 'my app id #',
                                    'secret' => 'my secret id',
                                    'cookie' => true
                                ));

        // $session = $facebook->getSession();
        $user = $facebook->getUser();

        $me = null;
        // Session based API call.
        if ($user) {
            try {
                $me = $facebook->api('/me');
            } catch (FacebookApiException $e) {
                // error_log($e);
            }
        }
    }

我只是难以置信，它已经工作了好几个星期了，而现在当我从一天半的时间回家后它无法正常工作。任何帮助都会受到赞赏，即使你的编码看到其他一些错误（这是我第一次尝试使用facebook api）：）

Answer 1

听起来你可能有无限重定向问题？

您正在检查是否在分配$ code之前设置了$ code，尝试翻转这两个语句的顺序：

$ code = $ _REQUEST ['code'];

if（empty（$ code））{ $ dialog_url =“http://www.facebook.com/dialog/oauth?client_id=”。 $ app_id。“＆amp; redirect_uri =”。 urlencode（$ my_url）。“＆amp; scope = email”; echo“top.location.href ='”。 $ dialog_url。“'”; }

Answer 2

你可能需要在base_facebook.php中的受保护函数getCode（）中将$ _REQUEST更改为$ _GET

protected function getCode() {


if (isset($_GET['code'])) {
  if ($this->state !== null &&
      isset($_GET['state']) &&
      $this->state === $_GET['state']) {

    // CSRF state has done its job, so clear it
    $this->state = null;
    $this->clearPersistentData('state');
    return $_GET['code'];
  } else {
    self::errorLog('CSRF state token does not match one provided.');
    return false;
  }
}

return false;
  }

Facebook连接不会突然重定向

2 个答案: