PHP Posting on Facebook Page Wall

[ILYAS415]

Hi. I am currently working on a script designed so that the admin of a website can post onto a Facebook wall for his companies Page. This is my first ever time working with Facebooks SDK API and I'm finding loads of outdated tutorials and scripts out there so I'm really stumped.

 

This is what I've written so far:

// Get these from http://developers.facebook.com
$api_key = '**************';
$secret  = '*********************************';
$token = '**************|*************************';
$pageid = '*******************';

// ^^ ABOVE IS THE API, SECRET TOKEN INFO ETC WHICH IVE OMMITTED

include_once '****/*****/src/facebook.php'; //ommitted link to fb sdk

	$facebook = new Facebook(array(
             'appId' => $api_key,
             'secret' => $secret,
             'cookie' => true
         ));
		 	 
	$user_id = $facebook->getUser(); //works
	//END OF FACEBOOK REQUIRED INFORMATION
	
	echo "USER ID: ".$user_id."<br />"; //it succesfully gets user id

	if($user_id) {

      // We have a user ID, so probably a logged in user.
      // If not, we'll get an exception, which we handle below.
      try {
		  
		$facebook->setAccessToken(qa_opt('facebook_page_access_code'));
		// Try to extend token
        $access_token = $facebook->getExtendedAccessToken();  
		  
        $attachment = array(
            'access_token' => $token,
            'message' => 'message here', 
            'link'    => 'http://domain.com/index.php',
            'picture' => 'http://domain.com/images/image.png',
            'name'    => 'Name',
            'description'=> 'Latest news for domain.com.'
    	);
		
	
      ///       THE BELOW LINE IS CAUSING SOME SORT OF ERROR
      $res = $facebook->api('/'.$pageid.'/feed','POST',$attachment);

	echo "Post done!";
		
		
      } catch(FacebookApiException $e) {
        // If the user is logged out, you can have a 
        // user ID even though the access token is invalid.
        // In this case, we'll get an exception, so we'll
        // just ask the user to login again here.
        $login_url = $facebook->getLoginUrl( array(
                       'scope' => 'publish_stream'
                       )); 
        echo 'Please <a href="' . $login_url . '">login.</a>';
        error_log($e->getType());
        error_log($e->getMessage());
      }

I didn't include the entire script because I believe the problem mainly concerns the following piece of code from the above:

$res = $facebook->api('/'.$pageid.'/feed','POST',$attachment);

The thing is, when the above line is commented (and thus not executed by the script), the script runs without errror and displays "post done!"

If I change the $res variable to:

$res = $facebook->api('me/feed', 'post', array(
             'message' => 'Hello World!'
         ));

The script will post but it will post to my wall. However, I need it to post to the Facebook Page (i.e. a company page) and I know I need to use something like the $res variable I first cited from my script.

 

So the jist of my question is: what am I missing/doing wrong that won't let me post to a facebook page as the pages admin?

 

Thanks guys.

Edited September 23, 2013 by ILYAS415

[ILYAS415]

I forgot to mention, when the var $res is allowed to run, there is an error (don't know why) and the script goes to and processes the catch(facebookapiexception $e) part and the page outputs "please login" (although im already logged in)

[ILYAS415]

Fortunately, after HOURS of searching, I found another script that worked for me which allows me to publish to a page as the pages admin.

 

It is as below, in case anybody else wants to use it:

// Get these from http://developers.facebook.com
$appid = 'appID here';
$secret  = 'secret here';
$page_id = '520883404668278';


$message = "Message you want to post here";

	require_once 'src/facebook.php';
        // PATH TO YOUR Facebook SDK php file

// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
  'appId'  => $appid,
  'secret' => $secret,
));

// Get User ID
$user = $facebook->getUser();
echo $user;

if ($user) {
  try {
    $page_info = $facebook->api("/$page_id?fields=access_token");
	
    if( !empty($page_info['access_token']) ) {
        $args = array(
            'access_token'  => $page_info['access_token'],
            'message'       => $message 
        );
        $post_id = $facebook->api("/$page_id/feed","post",$args);
		
    } else {
        $permissions = $facebook->api("/me/permissions");
        if( !array_key_exists('publish_stream', $permissions['data'][0]) ||
           !array_key_exists('manage_pages', $permissions['data'][0])) {
                // We don't have one of the permissions
                // Alert the admin or ask for the permission!
                header( "Location: " . $facebook->getLoginUrl(array("scope" => "publish_stream, manage_pages")) );
        }
    }
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}

// Login or logout url will be needed depending on current user state.
if ($user) {
  $logoutUrl = $facebook->getLogoutUrl();
} else {
  $loginUrl = $facebook->getLoginUrl(array('scope'=>'manage_pages,publish_stream'));
}

The only thing is that I am still unsure why my initial code did not work.