update field collection without saving entity

field_collection

http://alexrayu.com/blog/saveupdate-field-collection-without-nodesave

// Get field collection (supposedly containing one image with meta data)
  $fc = entity_load('field_collection_item', array($fcid));
  // If we were to have multi-value fc's, we weould have a cycle here in place of current()
  $fc = current($fc);
 

// Get meta data. A custom function.
  $meta = custom_get_meta_data($fc);
 

// Assign meta data 
  $fc->field_title[LANGUAGE_NONE][0]['value'] = $meta->title;
  $fc->field_author_name[LANGUAGE_NONE][0]['value'] = $meta->author;
  $fc->field_caption[LANGUAGE_NONE][0]['value'] = $meta->caption;
  $fc->field_alt_text[LANGUAGE_NONE][0]['value'] = $meta->alt_text;
  $fc->field_short_caption[LANGUAGE_NONE][0]['value'] = $meta->short_caption;
 

entity_save('field_collection_item', $fc);