Post Something to a Facebook Page I Manage From My WordPress Site

I figured out how to post something from my WordPress site to a Facebook time line, but I also want to be able to post to a Facebook Page that I manage as well. I would like to post some of the random quotes I’ve generated to my Facebook page.

The code is similar to the code I used to post to a wall or time line, but I have to know on which page to post and if the current user has permission to do so. Here’s the code I used:

//
session_start();
ob_start();
/**
 * Edit the Page ID you are targeting
 * And the message for your fans!
 */
$page_id = 'YourPage';
$message =  'my message!'; 
$fbconfig['appid' ] = "YourAppId";
$fbconfig['secret'] = "YourSecret";

require 'src/facebook.php';  // use the path to facebook.php on your site

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

// Get User ID
$user = $facebook->getUser();
if ($user) {
  try {
    $page_info = $facebook->api("/$page_id?fields=access_token"); // get access token
    if( !empty($page_info['access_token']) ) {
        $args = array(  // set up arguments for the post
            'access_token'  => $page_info['access_token'],
            'message'       => $message 
        );
        $post_id = $facebook->api("/$page_id/feed","post",$args);  // make the post
		header("Location: http://facebook.com/".$post_id['id']);  // go to Facebook and show the post
    } else {  // If you can't get the access token, then the user must not have given us permission
        $permissions = $facebook->api("/me/permissions");  // get permissions
        if( !array_key_exists('publish_stream', $permissions['data'][0]) ||
           !array_key_exists('manage_pages', $permissions['data'][0])) {  // check for the correct permissions
                // 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 = $facebook->getLoginUrl(array('scope'=>'manage_pages,publish_stream'));
  echo "<script type='text/javascript'>top.location.href = '$loginUrl';</script>";  // get the permissions
}
//

This will create a post on a page ($page_id) with the message 'my message!'. Note: if you try to execute the code more than once, you could get a duplicate message error. I’m not sure how long it is before you can post the same message twice because I was too impatient to wait.