How to Post on FB app users wall through API code - facebook

Question

I have created a facebook app and need to post on all users FB WAll, who have authorized app to post on there behalf.
i.e, A new event organized somewhere, So through App, admin can post on every App Users FB Wall about the event.
I was using Graph API, however its not working.
Any Pointers/ Guidance will be highly appreciated.
Thanks

Answer 1

You have to do an api call with parameters to post on the users wall.
Edit.:
Here is the below linked example, with some explanation:
<?php
$attachment = array(
'message' => 'this is my message',
'name' => 'This is my demo Facebook application!',
'caption' => "Caption of the Post",
'link' => 'http://mylink.com',
'description' => 'this is a description',
'picture' => 'http://mysite.com/pic.gif'
);
?>
$result = $facebook->api('/me/feed/', 'post', $attachment);
The $attachment array contains the parameters of the wall post and the $facebook->api('/me/feed/','post',$attachment); make the call and returns the result into $result.
Here you can find the source: How do you post to the wall on a facebook page (not profile)

Answer 2

Publishing to user's wall in JS SDK:
var body = 'Status Test';
FB.api('/me/feed', 'post', { message: body }, function(response) {
if (!response || response.error) {
alert('Error occured');
} else {
alert('Post ID: ' + response.id);
}
});
[EDIT]
In Php
$ret_obj = $facebook->api('/me/feed', 'POST',
array(
'message' => 'Posting with the PHP SDK!'
));