php - 作为来自另一个 PHP 站点的页面发布到粉丝页面的墙上

Question

我知道有很多关于此的问题，但似乎都需要用户登录...我一直在使用所有可能教程中的代码片段，但似乎没有一个有效。

场景如下:我有一个在 PHP 上运行的照片社区，我在 Facebook 上有一个粉丝页面。当主站点上的图像收集到一定数量的选票时，就会触发一个功能，将图像链接发布到 Facebook 墙上。链接(帖子)作为页面而不是管理员发布。管理员当然不会在线...这些天甚至可以这样做吗？我有最新的 PHP SDK，这是在插入主站点之前我需要在独立模式下工作的功能。

好的。如果我登录到 Facebook，此代码将完美运行，但如果我未登录 - 它不会发布...该应用程序具有所有必要和不必要的 :) 权限，可以代表我的(管理员)与我的页面进行交互。任何想法将不胜感激。

    <?php
//facebook application
$fbconfig['appid' ]     = "1848740815xxxxx";
$fbconfig['secret']     = "a5aa62bb3a8ddcb98d5d9dbe4a3xxxxx";
$fbconfig['pageid']     = "121409594622865";

$user  =   null; //facebook user uid
try{
    include_once "facebook.php";
}
catch(Exception $o){
    error_log($o);
}
// Create our Application instance.
$facebook = new Facebook(array(
  'appId'  => $fbconfig['appid'],
  'secret' => $fbconfig['secret']
));
//Facebook Authentication part
$user       = $facebook->getUser();
$loginUrl   = $facebook->getLoginUrl(
        array(
            'scope'         => 'offline_access,publish_stream'
            )
        );
$logoutUrl  = $facebook->getLogoutUrl();
$pageid = $fbconfig['pageid'];

if ($user) {
      try {
        $page_info = $facebook->api("/$pageid?fields=access_token");

        if( !empty($page_info['access_token']) ) {
        $args = array(
            'access_token'  => $page_info['access_token'],
            'message' => 'This is a test feed message', 
            'link'    => 'http://www.fotodvor.com',
            'picture' => 'http://www.fotodvor.com/data/media/15/1319971991.jpg',
            'name'    => 'Test Picture',
            'description'=> 'Description of the test picture!'
        );
        $post_id = $facebook->api("/$page_id/feed","post",$args);
    }
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}
?>

提前致谢

Answer 1

这是一个修改过的脚本，其中的解释根据 API 的变化进行了调整

<?php
//facebook application
$fbconfig['userid']    = "5332534xx";
$fbconfig['appid' ]    = "184874081548xxx";
$fbconfig['secret']    = "a5aa62bb3a8xxxb98d5d9dbe4a368xxx";
$fbconfig['pageid']    = "121409594622xxx";

$fbconfig['token1']     = "AAACoJFn1eLABAKpL9W0nZBrw0e3zzdSNVsTg6FWDMhSnOUeinjid6yAQ2z9JDxxxxxxc1hMHBC3GG18KZBwppGDehWMEwLe56wagZDZD";  // step 1 - returned by loggin in.
$fbconfig['token2']     = "AAACoJFn1eLABAC2Q8OLnqxjUSKzdn9CzaXhy8nsG61vzp2ufePr5iwHZA7TM7Ibxxxxxxyf868O04FeBxMrIo0RCumrNaB78hZAp2uRrbVlGVPXP"; // step 3 - this is a page access token as page
$fbconfig['my_ulr']     = 'http://'.$_SERVER['SERVER_NAME'];

include_once "facebook.php";

// Create our Application instance.
$facebook = new Facebook(array(
  'appId'  => $fbconfig['appid'],
  'secret' => $fbconfig['secret'],
));

// 1. we need to get a user access_token first, (old approach with offline_access forces the tokens received not to expire (good examples here - http://developers.facebook.com/docs/authentication2/ and http://www.howtobe.pro/tag/graph-api)
// run the file and see step 1 instructions.

//offline_access has been deprecated in May 2012 and therefore excluded from the request below
$token_url1 = "https://www.facebook.com/dialog/oauth?"."client_id=".$fbconfig['appid']."&redirect_uri=".urlencode($fbconfig['my_ulr'])."&scope=manage_pages,publish_stream&response_type=token";

echo "<h2>This little working example should give you a working non expiring token to use in your PHP script to enable it to post to your Facebook page as a page and not as a user</h2><br>";
echo "1 - Click on the link below (this redirects to uri with token attached). Log in as admin of the page you are trying to post to. Then copy the token you will get in the address bar to be used in the script in step 2.<br>";
echo "<a href='".$token_url1."' target='_blank'>$token_url1</a>";

//2. then paste the token you received into "step 1" variable in the config section above. Run this script again when logged in to receive all info.
$token_url2 = "https://graph.facebook.com/me?access_token=".$fbconfig['token1'];
$me = json_decode(file_get_contents($token_url2), true);

//echo "<hr><br>this URL gives you all pages that you as admin have access to, but these are NOT what we need to post to the fan page as PAGE so this is just for the heck of it...<br>";
//echo "<a href='".$token_url2."' target='_blank'>$token_url2</a>";
//echo "<hr>this is a raw server reply<br>";
//echo d($me['id'])."<hr>";

//new changes to API - https://developers.facebook.com/roadmap/offline-access-removal/#extend_token
$new_token_url2 = "https://graph.facebook.com/oauth/access_token?client_id=".$fbconfig['appid']."&client_secret=".$fbconfig['secret']."&grant_type=fb_exchange_token&fb_exchange_token=".$fbconfig['token1'];
$new_token2 = file_get_contents($new_token_url2);
$vars = explode('&', $new_token2);
//d($vars);

echo "2. We now obtain a long lasting token (based on <a href='https://developers.facebook.com/roadmap/offline-access-removal/#extend_token' target='_blank'>this</a>)
<br><br>We send the request<br>'".$new_token_url2."'<br><br>and the reply is:<br>'".$new_token2."'<br><br>";

//http://developers.facebook.com/tools/explorer?method=GET&path=533253476&accounts&access_token=AAACoJFn1eLABAFZBftV0vtlBiHKA7ZAIrukrriyp2coWSavj3L4CbfJ9r3WY76IPi7pwUgt3wsubaI4iBbsr663PrbNyaLdZAhLxneOLAZDZD

echo"So now open this page <a href='http://developers.facebook.com/tools/explorer' target='_blank'>http://developers.facebook.com/tools/explorer</a>, 
then put the token above to put into the 'Access Token: ' field and press enter... You will need to press 'accounts' link to the right from the response window.
<br>you will see another response and copy your page access token from there. Automating this task into one query did not work... I tried many times.. the token returned IS NOT THE SAME as you would get following the instructions step by step...
This approach does not work - <br>";
echo "http://developers.facebook.com/tools/explorer?method=GET&path=".$me['id']."%2Faccounts&".$vars[0]."<BR><BR><BR>";
echo "Please check it here <a href='http://developers.facebook.com/tools/debug' target='_blank'>https://developers.facebook.com/tools/debug</a> and make sure it never expires...";


$pageid = $fbconfig['pageid'];
try {

//Step 3. Run this script WHEN LOGGED IN to and paste the resulting token into step 3 variable above to check the functionality

/*     $page_info = $facebook->api("/$pageid?fields=access_token&".$new_token2);  //wrong approach to use this straight. THIS is the access token is that we need. BUT this will work only if user is logged in. so 
    echo "<hr>this is a page_info breakdown";
    d($page_info);
    echo "and the access token you needs to paste into fbconfig['token2'] variable is this:<br>";
    echo $page_info['access_token']; */

    $args = array(
            'access_token'  => $fbconfig['token2'], //do not attempt to plug the $page_info['access_token'] here... it will be empty once you log off Facebook
            'message' => 'This is a test feed message', 
            'link'    => 'http://www.test.com',
            'picture' => 'https://www.google.com/intl/en_com/images/srpr/logo3w.png',
            'name'    => 'Test Picture',
            'description'=> 'Description of the test picture!'
        );

         //uncomment this once you are ready to post and you can see all the access token in the last step. Then comment out all echo and d()'s to make the script silent...            
        //$post_id = $facebook->api("/$pageid/feed","post",$args);
        echo "<hr>This will show once the message is posted - post_id is: <br>";
        d($post_id); 
  } catch (FacebookApiException $e) {
    error_log($e);
  }

function d($d){
    echo '<pre>';
    print_r($d);
    echo '</pre>';
}
?>