php - Post to facebook via cron -

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i've been trying 2 days post messages gathered twitter search 1 of facebook pages automatically - i.e. via cronjob.

the twitter part went fine, life of me can't facebook part work.

the problem script works... until doesn't, access_token expired after few hours.

now have message : #200) posts actor page cannot include target_id.

i've tried many things suggested on various threads. problem is: facebook api seems change quite , used work doesn't.

any idea , suggestion how make work reliably welcome.

here code have far. i've created facebook app, , generated access token using fb graph explorer , request '/me/account'.

require('config.inc.php'); require('_classes/facebook-php-sdk/src/facebook.php');  // connect facebook $facebook = new facebook(array(         'appid'  => fb_app_id,         'secret' => fb_app_secret,     ));  // message $msg_body = array(     'message' => $message->message."\n".'(via http://twitter.com/'.$message->author.')',     'access_token' => fb_access_token   ); // post facebook $fb_result=0; try {     $postresult = $facebook->api('/'.pageid.'/feed', 'post', $msg_body ); } catch (facebookapiexception $e) {     echo $e->getmessage(); }  if($postresult) {     $fb_result=1;     $last_posted_tweet_id = $message->id;     file_put_contents(folder.last_tweet_id_file, $last_posted_tweet_id);     echo 'your message '.$message->id.' posted on facebook wall.';     //print_r($msg_body); }

update code visible here http://phpbin.net/zmnt3mpt

i having similar problem access token expiring. turns out can exchange token "long lived" token

managed dig code:

try{         $token =  $facebook->getaccesstoken();          // "long-lived" access token         $curl = new curl();         $curl->setssl();         $exchange_url = "https://graph.facebook.com/oauth/access_token?client_id=".$facebook_app_id."&client_secret=".$facebook_app_secret."&grant_type=fb_exchange_token&fb_exchange_token=".$token;         $page = $curl->get($exchange_url);          if ($page){             $page = explode("access_token=", $page);             if (count($page) > 1){                 $page = explode("&", $page[1]);                 $token = $page[0];                  $facebook->setaccesstoken($token);             }         }      } catch(exception $e){         $token = '';     }

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