php – Facebook publish_stream代码以循环结束

发布时间：2020-12-13 21:46:58 所属栏目：PHP教程来源：网络整理

导读：我有以下代码,只要在应用程序的前一部分中,用户接受对publish_stream的应用程序请求,它就可以正常工作. # The facebook libraryrequire_once("/var/www/facebook-php-sdk-master/src/facebook.php");# Create facebook object$config = array();$config['app

我有以下代码,只要在应用程序的前一部分中,用户接受对publish_stream的应用程序请求,它就可以正常工作.

# The facebook library
require_once("/var/www/facebook-php-sdk-master/src/facebook.php");

# Create facebook object
$config = array();
$config['appId'] = 'appId_here';
$config['secret'] = 'secret_here';
$config['fileUpload'] = false; // optional

$facebook = new Facebook($config); 

$user_id = $facebook->getUser();

if ($user_id) {

    try {

        $user_profile = $facebook->api('/me','GET');

        #check permissions
        $api_call = array(
                'method' => 'users.hasAppPermission','uid' => $user_id,'ext_perm' => 'publish_stream'
        );

        #set to true if true...
        $can_offline = $facebook -> api( $api_call );

        #is it true?
        if( $can_offline ) {

            $post =  array(
                'message' => 'post_a_message'
            );

            $facebook->api('/' . $_GET["id"] . '/feed','POST',$post);

        } else {

            // can't post message - don't have permission

        }

    } catch (FacebookApiException $e) {

        error_log($e);
        exit;

    }

} else {

    error_log("user not logged in");
    exit;

}

为了尝试解决这个问题,我尝试将以下代码插入到else语句中,当前在上面的代码中只包含注释//无法发布消息 – 没有权限

我试图插入其他代码是这样的：

$loginUrl = $facebook->getLoginUrl( array( 'scope' => 'publish_stream' ) );
header("Location: ".$loginUrl);

只要用户接受允许我的应用程序使用publish_stream,这就有效.但是,如果用户不接受,我的应用将继续要求用户接受publish_stream.如果用户决定不接受,我该如何阻止该循环发生？

解决方法

这是工作代码：请检查：

页面名称：events.php

您可以看到$redirect_uri = https：//localhost/facebook_page/events.php它将返回到同一页面.

<?php

$facebook_appid         = "your appid";                     // Facebook appplication id
$facebook_secret        = "your app secret";                // Facebook secret id
$redirect_uri           = "https://localhost/facebook_page/events.php";   // return url to our application after facebook login ## should be SAME as in facebook application
$scope                  = "publish_stream"; // User permission for facebook

$profile_id             = "profile_id";// Where do you want to post it(profile id - It is a number)

$code                   = $_REQUEST["code"]?$_REQUEST["code"]:"";

if(empty($code)) {
    $_SESSION['state']  = rand(); // CSRF protection
    $dialog_url         = "https://www.facebook.com/dialog/oauth?client_id=". $facebook_appid . "&redirect_uri=" . urlencode($redirect_uri) . "&state=". $_SESSION['state'] . "&scope=".$scope;
    header("location:".$dialog_url);
}

if($_SESSION['state'] && ($_SESSION['state'] == $_REQUEST['state'])) {
    $token_url          = "https://graph.facebook.com/oauth/access_token?". "client_id=" . $facebook_appid . "&redirect_uri=" . urlencode($redirect_uri). "&client_secret=" . $facebook_secret . "&code=" . $code;
    $response           = @file_get_contents($token_url);

    $params             = null;
    parse_str($response,$params);

    $access_token       = $params['access_token'];


}

?>

<!-- Here you can use 
      message,picture,link,name,caption,description,source,place,tags 
     as input fields-->

<form enctype="multipart/form-data" method="POST" action="https://graph.facebook.com/<?php echo $profile_id;?>/feed?access_token=<?php echo $access_token; ?>">
    <input type="text" name="message" value="test" />
    <input type="submit" name="submit" value="Submit" />
</form>

你也可以使用jquery发布它.

（编辑：李大同）

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