Facebook Graph API : Publish to offline user, with user Facebook ID and access_token

[sami-sounine]

I'm using PHP/MySQL, and I want to publish for some offline users, I have already both permissions for publish_stream and offline_access, how to publish with the Graph API to this user wall, I already stored users ID's and access_token in my Database.how to do that ??the current code is not working for me, the php file stop execution at this line :\[code\]$result = $facebook->api('/'.$users[fid].'/feed?access_token='.$users[session].'/', 'post', $attachment);\[/code\]Thanks in advance.