Uploading a picture to facebook - php

Question

I am trying to upload a image to a gallery on a facebook fan page, here is my code thus far,
$ch = curl_init();
$data = array('type' => 'client_cred', 'client_id' => 'app_id','client_secret'=>'secret_key',' redirect_uri'=>'http://apps.facebook.com/my-application/'); // your connect url here
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'https://graph.facebook.com/oauth/access_token');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
$rs = curl_exec($ch);
curl_close($ch);
$ch = curl_init();
$data = explode("=",$rs);
$token = $data[1];
$album_id = '1234';
$file= 'http://my.website.com/my-application/sketch.jpg';
$data = array(basename($file) => "#".realpath($file),
//filename, where $row['file_location'] is a file hosted on my server
"caption" => "test",
"aid" => $album_id, //valid aid, as demonstrated above
"access_token" => $token
);
$ch2 = curl_init();
$url = "https://graph.facebook.com/".$album_id."/photos";
curl_setopt($ch2, CURLOPT_URL, $url);
curl_setopt($ch2, CURLOPT_HEADER, false);
curl_setopt($ch2, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, false);
curl_setopt($ch2, CURLOPT_POST, true);
curl_setopt($ch2, CURLOPT_POSTFIELDS, $data);
$op = curl_exec($ch2);
When I echo $token, I seem to be getting the token, but when I run the script, I get this error, {"error":{"type":"OAuthAccessTokenException","message":"An access token is required to request this resource."} , I have NO idea why it is doing this!
Basically what I am doing in that code is getting the access token with curl, and then, uploading the photo to my album also via curl, but I keep getting that error!
Any help would be appreciated, thank you!

Answer 1

Ok, got it working, here is the code, assuming that you have a valid session going.
$token = $session['access_token'];
//upload photo
$file= 'photo.jpg';
$args = array(
'message' => 'Photo from application',
);
$args[basename($file)] = '#' . realpath($file);
$ch = curl_init();
$url = 'https://graph.facebook.com/me/photos?access_token='.$token;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $args);
$data = curl_exec($ch);
This will upload the specified image to the session holders gallery, it will create a album if there is not one present, also you can access the token via the session array as demonstrated above.
Hope this helps someone out.

Answer 2

Probably your application doesn't have needed permissions.
To request permissions via OAuth, use
the scope argument in your
authorization request, and include a
comma separated list of all the
permissions you want to request.
http://developers.facebook.com/docs/authentication/permissions