PHP API FACEBOOK - Users post to facebook page and personal wall - php

Question

I created a contest where a submitted form will:
write a comment on the wall of Facebook staff and
write a comment on the wall of my page
I had no problems with step 1, but step 2 does not work. My code is as follows:
connect.php
<?php
//include the Facebook PHP SDK
include_once 'facebook.php';
//instantiate the Facebook library with the APP ID and APP SECRET
$facebook = new Facebook(array(
'appId' => 'CRYPT FOR THIS FORUM',
'secret' => 'CRYPT FOR THIS FORUM',
'cookie' => true
));
//Get the FB UID of the currently logged in user
$user = $facebook->getUser();
//if the user has already allowed the application, you'll be able to get his/her FB UID
if($user) {
//start the session if needed
if( session_id() ) {
} else {
session_start();
}
//do stuff when already logged in
//get the user's access token
$access_token = $facebook->getAccessToken();
//check permissions list
$permissions_list = $facebook->api(
'/me/permissions',
'GET',
array(
'access_token' => $access_token
)
);
//check if the permissions we need have been allowed by the user
//if not then redirect them again to facebook's permissions page
$permissions_needed = array('publish_stream', 'read_stream');
foreach($permissions_needed as $perm) {
if( !isset($permissions_list['data'][0][$perm]) || $permissions_list['data'][0][$perm] != 1 ) {
$login_url_params = array(
'scope' => 'publish_stream,read_stream',
'fbconnect' => 1,
'display' => "page",
'next' => 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']
);
$login_url = $facebook->getLoginUrl($login_url_params);
header("Location: {$login_url}");
exit();
}
}
//if the user has allowed all the permissions we need,
//get the information about the pages that he or she managers
//id pag sposiamo è 494659577226200
$accounts = $facebook->api(
'/me/accounts',
'GET',
array(
'access_token' => $access_token
)
);
//save the information inside the session
$_SESSION['access_token'] = $access_token;
$_SESSION['accounts'] = $accounts['data'];
//save the first page as the default active page
//$_SESSION['active'] = $accounts['data'][0];*/
//redirect to manage.php
header('Location: manage.php');
} else {
//if not, let's redirect to the ALLOW page so we can get access
//Create a login URL using the Facebook library's getLoginUrl() method
$login_url_params = array(
'scope' => 'publish_stream,read_stream',
'fbconnect' => 1,
'display' => "page",
'next' => 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']
);
$login_url = $facebook->getLoginUrl($login_url_params);
//redirect to the login URL on facebook
header("Location: {$login_url}");
exit();
}
?>
newpost.php
<?php
//include the Facebook PHP SDK
include_once 'facebook.php';
//start the session if necessary
if( session_id() ) {
} else {
session_start();
}
//instantiate the Facebook library with the APP ID and APP SECRET
$facebook = new Facebook(array(
'appId' => 'CRYPT',
'secret' => 'CRYPT',
'cookie' => true
));
//get the info from the form
$parameters = array(
'message' => $_POST['message'],
'picture' => $_POST['picture'],
'link' => $_POST['link'],
'name' => $_POST['name'],
'caption' => $_POST['caption'],
'description' => $_POST['description']
);
//add the access token to it
$parameters['access_token'] = $_SESSION['active']['access_token'];
//build and call our Graph API request
$newpost = $facebook->api(
'/494659577226200/feed',
'/me/feed',
'POST',
$parameters
);
//redirect back to the manage page
header('Location: manage.php');
exit();
494659577226200 = FBPAGEID
PROBLEM IS '/494659577226200/feed', and error AuthCode 200...

Answer 1

You need to ask your user's to give your app manage_pages permission to post to their pages they manage on behalf of them. Check out their permissions doc here, See Page Permissions section.
Quoted from docs:
manage_pages
Enables your application to retrieve access_tokens for Pages and Applications that the user administrates. The access tokens can be queried by calling //accounts via the Graph API. This permission is only compatible with the Graph API, not the deprecated REST API.
See here for generating long-lived Page access tokens that do not expire after 60 days.
Once you get this permission, you can then make a wall post using page access token