How to upload image to currently signed to Facebook user's "Wall photos" album

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Posted by andriy on December 19, 2011 at 8:00am
Last updated by andriy on Mon, 2011-12-19 08:44

Recently I had to deal with uploading photos to Facebook user's wall, while working on My Strauss site as Linnovate team developer, it took some time to bring together all pieces of information that I found on web. You can see actual upload on this page for example, (all pages are in Hebrew) - where to click is marked in red on the image below:

Where to click

Hope it will help somebody :)

<?php
  $app_id = YOUR_APP_ID; 
  $app_secret = YOUR_APP_SECRET;
  // in order to get the code, I use return URL set to my current page 
  $my_url = YOUR_PAGE_URL;

  // code usually is fetched from the URL as its GET parameter
  $code = $_REQUEST["code"];

  if(empty($code)) {
    // we also request user_photos permission
    $dialog_url = 'https://www.facebook.com/dialog/oauth?client_id=' . $app_id . '&redirect_uri=' . urlencode($my_url) . '&scope=user_photos';
    // redirect page to Facebook dialog, which will be redirected back to our current page, with code attached to URL
    echo("<script>top.location.href='" . $dialog_url . "'</script>");
  }
  else {
    //get user access_token
    $token_url = 'https://graph.facebook.com/oauth/access_token?client_id=' . $app_id . '&redirect_uri=' . urlencode($my_url) . '&client_secret=' . $app_secret . '&code=' . $code;
    $access_token = file_get_contents($token_url);

    // use FQL to get  "Wall photos" album's id (if it is created already by user, to create one from FB, just upload any photo from your wall sing "Add Photo / Video" link)
    $fql = 'SELECT object_id FROM album WHERE owner=me() AND type="wall"'; 
    $fql = urlencode($fql);
    // Run fql query
    $fql_query_url = 'https://graph.facebook.com/fql?q=' . $fql . '&' . $access_token . '&format=json-strings';
    $fql_query_result = file_get_contents($fql_query_url);
    $fql_query_obj = json_decode($fql_query_result, true);
    
    // does user have a wall photos album? if not use 'me', which will create Your Application album on FB and upload a photo to this album
    $wall_album = isset($fql_query_obj['data'][0]['object_id']) ? $fql_query_obj['data'][0]['object_id'] : 'me';

    parse_str($access_token);
    $img = $_SERVER['DOCUMENT_ROOT'] . "/YOUR_IMAGE_PATH_RELATIVE_TO_SITE_ROOT";

    $img_details = array(
      'name' => 'Your image description, may have URLs but not HTML',
      'source' => '@' . realpath($img),
      'access_token' => $access_token
    );

    // try to post a photo
    try {
      $fb = new Facebook(array(
        'appId'  => $app_id,
        'secret' => $app_secret,
        'cookie' => TRUE,
        'fileUpload' => TRUE, 
      ));

      // actual post
      $res = $fb->api("$wall_album/photos",'POST',$img_details);
      // print response
      drupal_set_message('<pre>' . print_r($res, 1) . '</pre>');
    } 
    catch (Exception $e) {
      drupal_set_message($e->getMessage());
    }
  }
?>