Get latest Facebook posts of page with PHP SDK

匿名 (未验证) 提交于 2019-12-03 02:45:02

问题:

The following code is inside a file called facebook_posts.php which I call from my index file like so: <?php require_once("http://www.example.com/design/php/facebook_posts.php"); ?>. However, where this code is put, there is no response. So neither success, nor the catch errors return an error (as I see it). I tried absolute URLs, but that didn't work either. (I hid the api and page information.) Apparently the content that follows the require_once (footer and scripts) aren't loaded. Something seems to go wrong when including the SDK.

I'm not using composer, do I need to require the Facebook\ files or use them? And which ones do I need for retrieving posts from a page?

<?php // Defining FB SDK with absolute paths define('FACEBOOK_SDK_V4_SRC_DIR', 'http://example.com/design/Facebook/'); require 'http://example.com/design/php/autoload.php';  use Facebook\FacebookSession; use Facebook\FacebookRequest; use Facebook\GraphUser; use Facebook\FacebookRequestException;  FacebookSession::setDefaultApplication('{my-app-id}','{my-app-secret}');  $session = new FacebookSession('{my-long-lived-access-token}');  // Get the GraphUser object for the current user:  try { $request = new FacebookRequest(   $session,   'GET',   '/{my-page-id}/feed' ); $response = $request->execute(); $graphObject = $response->getGraphObject();  var_dump($graphObject); echo graphObject; echo "banana";  } catch (FacebookRequestException $e) {   echo "API ERROR"; } catch (\Exception $e) {   echo "other error"; }  ?> 

EDIT: so I just required in all the FB files, and that seems to work. However, I don't know how to traverse/iterate the object that is returned. I.e. how to loop through the different posts (the four latest posts by the page) and echo them in HTML. A base structure would look like this:

<time>{publish date}</time> <p>{post message}</p> <a href="{link to included url}">{title to included url}</a> 

回答1:

You need to use a long-lived page access-token.

Page Access Token

These access tokens are similar to user access tokens, except that they provide permission to APIs that read, write or modify the data belonging to a Facebook Page. To obtain a page access token you need to start by obtaining a user access token and asking for the manage_pages permission. Once you have the user access token you then get the page access token via the Graph API.

As @CBroe said, you should not use that access token in client-side code as it is secret/private and you don't want anyone to get it.

So for what you want to do, Javascript is not the right choice. You will have to use some server-side code, like PHP, Python or Ruby to get the posts. If that is clear, here is how you can create it.


  1. Create a Facebook app:

    • keep the app id (1) and app secret (2) aside,
    • in the "advanced" settings, activate OAuth in order to avoid The application has disabled OAuth client flow.
  2. You need to create a user access token.

    • go on the Graph API Explorer and select the application you just created,
    • generate an access token: click "Get access token" and tick manage_pages in the "Extended Permissions" tab.
  3. Get your short-lived page access token.

    • still in the Graph API explorer, query me/accounts (GET),
    • find your page and get its access token (3).
  4. Get your long-lived page access token.

    • in your browser, paste https://graph.facebook.com/oauth/access_token?client_id=(1)&client_secret=(2)&grant_type=fb_exchange_token&fb_exchange_token=(3) in the address bar,
    • replace (1), (2) and (3) by your app id, your app secret and your page access token,
    • get your new long-lived access token from the result: access_token=FAKECAALBygJ4juoBAJyb8Cbq9bvwPYQwIaX53fLTMAWZCmDan1netI30khjITZAqcw9uE0lRT4ayWGm2ZCS7s7aZCVhF3ei6m0fuy2AkTkwmzUiJI4NUOZAyZAzuL,
    • use the Access Token Debugger to verify that your access token will never expire.

Now you can use that new access token to retrieve the posts of your page:

$session = new FacebookSession('FAKECAALBygJ4juoBAJyb8Cbq9bvwPYQwIaX53fLTMAWZCmDan1netI30khjITZAqcw9uE0lRT4ayWGm2ZCS7s7aZCVhF3ei6m0fuy2AkTkwmzUiJI4NUOZAyZAzuL');  try {     $data = (new FacebookRequest(         $session, 'GET', '/me/posts'     ))->execute()->getGraphObject()->getPropertyAsArray("data");      foreach ($data as $post){         $postId = $post->getProperty('id');         $postMessage = $post->getProperty('message');         print "$postId - $postMessage <br />";     } } catch (FacebookRequestException $e) {     // The Graph API returned an error } catch (\Exception $e) {     // Some other error occurred } 


回答2:

For me, this is the best solution using an App with Graph API 2.5:

1.- Create an App.

2.- Go to: https://developers.facebook.com/tools/explorer/

  • Select your new created app on the right top.
  • Select "Get App Token"

3.- Copy this "{ACCESS-TOKEN}" (is in the form: number|hash)

IMPORTANT: (This are not app_id|app_secret!!!)

4.- Query the URL with CURL:

(5).- Equivalent URL:

https://gist.github.com/biojazzard/740551af0455c528f8a9

Hope it helps.

.a



回答3:

  1. Create App Developer Facebook Page.

Then code exmaple:

<ul> <?php  $page_name = '{PAGE_NAME}'; // Example: http://facebook.com/{PAGE_NAME} $page_id = '{PAGE_ID}'; // can get form Facebook page settings $app_id = '{APP_ID}'; // can get form Developer Facebook Page $app_secret = '{APP_SECRET}'; // can get form Developer Facebook Page $limit = 5;  function load_face_posts($page_id, $page_name, $app_id, $app_secret, $limit, $message_len) {     $access_token = "https://graph.facebook.com/oauth/access_token?client_id=$app_id&client_secret=$app_secret&grant_type=client_credentials";     $access_token = file_get_contents($access_token); // returns 'accesstoken=APP_TOKEN|APP_SECRET'     $access_token = str_replace('access_token=', '', $access_token);     $limit = 5;     $data  = file_get_contents("https://graph.facebook.com/$page_name/posts?limit=$limit&access_token=$access_token");     $data = json_decode($data, true);     $posts = $data[data];     //echo sizeof($posts);      for($i=0; $i<sizeof($posts); $i++) {         //echo $posts[$i][id];         $link_id = str_replace($page_id."_", '', $posts[$i][id]);         $message = $posts[$i][message];          echo ($i+1).". <a target='_blank' href='https://www.facebook.com/AqualinkMMC/posts/".$link_id."'>".$message."</a><br>";     } }  load_face_posts($page_id, $page_name, $app_id, $app_secret, $limit, $message_len); ?> </ul> 


回答4:

all what you need to get latest posts from facebook feed is described here: http://piotrpasich.com/facebook-fanpage-feed/

In shortcut - use your fanpage feed (please replace {id} by proper id)

https://facebook.com/feeds/page.php?format=atom10&id={id}

You can download the feed with this piece of code:

$curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $rss_url); curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0)'); curl_setopt($curl, CURLOPT_REFERER, ''); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($curl, CURLOPT_TIMEOUT, 10); $raw_xml = curl_exec($curl); // execute the curl command 


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