Facebook PHP post to fan page with cronjob?

Question

I am using the following code to post to my facebook fan page and it is working fine. Now I want to use cronjob in order to post to Facebook. I know I have to use as access

Answer 1

This is how you can do it :

1. Get a short lived accesstoken.
2. Extend it.
3. Get a long lived page accesstoken. (Doesn't matter, here we are going to fetch new accesstoken every time. Less complicated, and reliable.)

Thought I would go with an algo, instead I am adding all the possible codes and documentations since this may help someone else too.

Getting short lived access token and extending it:

fetchtoken.php

 top.location.href='" . $dialog_url . "'");
}
if($_SESSION['state'] && ($_SESSION['state'] === $_REQUEST['state'])) {
    $token_url = "https://graph.facebook.com/oauth/access_token?"
       . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
       . "&client_secret=" . $app_secret . "&code=" . $code;

     $response = file_get_contents($token_url);
     $params = null;
     parse_str($response, $params);
     $longtoken=$params['access_token'];


//save it to database   
} 
?>

So you now have a long lived accesstoken ready in your database, a text file or whatever.

cronjob.php

setAccessToken($access_token); // sets our access token as the access token when we call something using the SDK, which we are going to do now.

$config = array('appId' => 'xxx','secret' => 'xxx');

$params = array('scope'=>'user_likes,publish_actions,email,publish_stream,manage_pages');
$facebook = new Facebook($config);
$user = $facebook->getUser();
if($facebook->getUser()) {
    try {

        $user_profile = $facebook->api('/me');
    } catch(FacebookApiException $e) {
        $login_url = $facebook->getLoginUrl($params);
        error_log($e->getType());
        error_log($e->getMessage());
    }   
}
else {
    $login_url = $facebook->getLoginUrl($params);
}    

$page_id = "xxxxxxxxxxxxx";
$page_access_token = "";
$result = $facebook->api("/me/accounts");
foreach($result["data"] as $page) {
    if($page["id"] == $page_id) {
        $page_access_token = $page["access_token"];
        //echo '
';
        //echo "2. ".$page_access_token;
        break;
    }
}

$args = array(
    'access_token'  => $page_access_token,
    'message'       => stripslashes($image_caption).$animaged_gif,
    'name' => stripslashes($image_caption).$animaged_gif,
    'link' => "http://www.example.com/images.php?i=".$image_name,
    'picture' => "http://www.example.com/thumbnails/".$image_name.".png",
    'actions' => array(
            'name' => 'See Pic',
             'link' => "http://www.example.com/images.php?i=".$image_name
    )
);
$post = $facebook->api("/$page_id/feed","post",$args);
?>

Make sure you don't grab access_token(user access token / $access_token) again in the script.

Also, the access_token in $args which is the page access token should be inserted by the $page_access_token variable, and not manually.

Having offline_access in the scope does nothing than showing them on the permission dialogue box that their data can be accessed any time which can be done without that notification anyway.

This should work as long as you visit the fetch.php once at the start, and once every 60 days manually.

Let me know.