张贴图片+描述在我的facebook有趣的网页从我的网站

我想上传一张图片+描述在我的facebook有趣的页面从我的网站(后台的网站)我没有找到一个明确的例子使用我尝试了很多脚本，但我得到了很多错误，我需要帮助这里是我的代码:

    function postOnFacebook($app_id, $app_secret, $message, $icon) {
        require 'src/base_facebook.php';
        require 'src/facebook.php';
        $curlcontent = "curl";
        $curlstatus = "Curl is not installed  - This is a Problem";
        if (function_exists('curl_init')) {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, 'https://api.facebook.com/restserver.php');
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0');
            $curlcontent = curl_exec($ch);
            curl_close($ch);
            $curlstatus = "Curl is available but cannot access Facebook - This is a problem ";
            if (strlen($curlcontent) > 6) {
                $curlstatus = "Curl is available and can access Facebook - All is OK";
            }
        }
        $facebook = new Facebook(array(
                    'appId' => $app_id,
                    'secret' => $app_secret,
                    'fileUpload' => true,
                ));
        $facebook->setFileUploadSupport(true);
        $photo_details = array(
            'message' => 'Photo message',
            'access_token' => $facebook->getAccessToken()
        );    

            $file = $icon; //Example image file
            $photo_details['image'] = '@' . realpath($file);
            $upload_photo = $facebook->api('/me/photos', 'post', $photo_details);

但是我得到了这个错误:

Fatal error: Uncaught OAuthException: An active access token must be used to query information about the current user. thrown in C:'xampp'htdocs'facebookSender'src'base_facebook.php on line 1039

Thanks to lot