Question

I have a facebook application and i want to post a message from the application directly to the wall by calling a php script from my flex application.
Can you please help me out.

function postmessage($appid) {
    $facebook = new Facebook(array(
        'appId' => 'XXX',
        'secret' => 'xxx',
        'cookie' => true
    ));
    $session = $facebook->getSession();
    $attachment = array(
        'message' => 'this is my message',
        'name' => 'This',
        'caption' => 'Caption of the Post',
        'link' => 'apps.facebook.com/tvtreasurehunt/',
        'description' => 'this is a description'
    );
    $result = $facebook->api('/me/feed/', 'post', $attachment);
}

Answer 1

The following code creates a post on the user’s wall. Prerequisite: you need to have a valid access_token with publish_stream permission.

$context = stream_context_create(array(
  "http" => array(
    "method"    => "POST",
    "content"   => http_build_query(array(
      "access_token"    =>      $access_token,
      "link"            =>      $config["fb_app_url"],
      "name"            =>      "name",
      "description"     =>      "description",
    )),
  ),
));

file_get_contents("https://graph.facebook.com/me/feed", false, $context);

For more detailed information see the official documentation: Post on Facebook Developers.