PHP - Post to Facebook Page using SDK no errors but no posts showing - facebook

Question

I'm using the tutorial here http://www.adamboother.com/blog/automatically-posting-to-a-facebook-page-using-the-facebook-sdk-v5-for-php-facebook-api/ to post to a facebook page using the PHP sdk.
I have create the app on Facebook, and I have created the Never Expire Page Access Token, which I have verified using the Access Token Debug Tool https://developers.facebook.com/tools/debug/accesstoken/
However, when I run my test code, it does NOT return any errors, but I get no posts on my page. I get a response back from my print_r($graphNode) of the following
Facebook\GraphNodes\GraphNode Object
(
[items:protected] => Array
(
[id] => 1204777049583245_1264619360265680
)
)
The code for my test post is below, can anyone explain to me WHY I am not getting any posts to show up?
define("FACEBOOK_APP_ID","MY APP ID");
define("FACEBOOK_APP_SECRET","MY APP SECRET");
define("FACEBOOK_APP_TOKEN","MY PAGE ACCESS TOKEN");
define("FACEBOOK_SDK_V4_SRC_DIR",$_SERVER['DOCUMENT_ROOT'].'/socialmedia/Facebook/src/Facebook/');
require_once($_SERVER['DOCUMENT_ROOT'].'/socialmedia/Facebook/src/Facebook/autoload.php');
$fb = new Facebook\Facebook([
'app_id' => FACEBOOK_APP_ID,
'app_secret' => FACEBOOK_APP_SECRET,
'default_graph_version' => 'v2.2',
]);
//Post property to Facebook
$linkData = [
'link' => 'www.yoururl.com',
'message' => 'test message'
];
$pageAccessToken = FACEBOOK_APP_TOKEN;
try {
$response = $fb->post('/me/feed', $linkData, $pageAccessToken);
} catch(Facebook\Exceptions\FacebookResponseException $e) {
echo 'Graph returned an error: '.$e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
echo 'Facebook SDK returned an error: '.$e->getMessage();
exit;
}
$graphNode = $response->getGraphNode();
echo '<pre>';
print_r($graphNode);
echo '</pre>';
exit;