post on user's timeline by app

<?php

  session_start();
  require_once('AppInfo.php');
  require_once('utils.php');
  require_once('sdk/src/facebook.php');
  
  $facebook = new Facebook(array(
   'appId'  => 'APP_ID',
   'secret' => 'APP_SECRET',
  ));


$app_token="XXXXXX"; //long life access_token should be better

 $attachment = array
 (
 "access_token"=>"$app_token",
 "message" => "Interesting App",
 "name" => "MyApp",
 "caption" => "About MyApp",
 "link" => "http://facebook.com/",  //your own url
 "description" => "Awesome App",
 "scope" => "publish_stream"
 );
 
 $result = $facebook->api("/USER_ID/feed","POST",$attachment);

print_r($result );
 ?>