Question

我正在尝试更改我网站上Facebook登录的重定向网址。这样我就可以进入一个页面，我可以在我的数据库中创建一个新用户（如果它们尚不存在），然后将它们重定向到我的主页面。但是，当我尝试登录时，我在Facebook上收到以下错误：An error occurred with PHP SDK Unit Tests. Please try again later.

我的代码（我想将它们重定向到mysite.com/createfbuser.php）：

public function getLoginUrl($params=array()) {
     $this->establishCSRFTokenState();
     $currentUrl = $_SERVER['SERVER_NAME'] . '/createfbuser.php';
     return $this->getUrl(
       'www',
       'dialog/oauth',
       array_merge(array(
                'client_id' => $this->getAppId(),
                'redirect_uri' => $currentUrl, // possibly overwritten
                'state' => $this->state,
                'scope' => 'email'),
       $params));
}

编辑原始代码读取$currentUrl = $this->getCurrentUrl();作为参考

Answer 1

首先，您不必编辑PHP SDK，下面是验证用户身份然后重定向到目标网页的示例，

确保替换：

你的APP-ID-HERE和你的facebook应用程序ID，

你的APP-API-SECRET-HERE和你的facebook应用程序密钥

您的REDIRECT-URL-HERE与您的目标网页网址

<?php

    // Requires Facebook PHP SDK 3.0.1: https://github.com/facebook/php-sdk/
    require ('facebook.php');

    define('FACEBOOK_APP_ID',"YOUR-APP-ID-HERE");
    define('FACEBOOK_SECRET',"YOUR-APP-API-SECRET-HERE");
    define('REDIRECT_URI',"YOUR-REDIRECT-URL-HERE");
    $user = null;

    $facebook = new Facebook(array(
        'appId' => FACEBOOK_APP_ID,
        'secret' => FACEBOOK_SECRET,
        'cookie' => true
    ));

    $user = $facebook->getUser(); // Get the UID of the connected user, or 0 if the Facebook user is not connected.

    if($user == 0) {
        // If the user is not connected to your application, redirect the user to authentication page
        /**
         * Get a Login URL for use with redirects. By default, full page redirect is
         * assumed. If you are using the generated URL with a window.open() call in
         * JavaScript, you can pass in display=popup as part of the $params.
         * 
         * The parameters:
         * - redirect_uri: the url to go to after a successful login
         * - scope: comma separated list of requested extended perms
         */

        $login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI));

        echo ("<script> top.location.href='".$login_url."'</script>");

    } else {
        // if the user is already connected, then redirect them to landing page or show some content
        echo ("<script> window.location.href='".REDIRECT_URI."'</script>");
    }

?>

如果您想获得扩展权限，只需在登录网址中添加另一个“范围”参数，例如：

$login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI,'scope' => 'comma-separated-list-of-requested-extended-perms'));

有关权限的详细信息，请参阅facebook permissions docs

Answer 2

您重定向到的网址需要与您在应用设置中为应用配置的网域相同，除此之外没有任何限制，您可以将redirect_url设置为您域中的任意网址。

当您尝试以管理员身份验证应用时，应该会显示更具体的错误消息 - 很可能是错误191（有关其他可能的原因和解决方案，请参阅Facebook API error 191）

登录时更改Facebook重定向URL

2 个答案: