/**
 * Delete a project
 */
function bp_portfolio_delete_item($project_id)
{
    global $bp;
    $project = new BP_Portfolio_Item(array('id' => $project_id, 'author_id' => bp_loggedin_user_id()));
    $project->get();
    if ($project->query->post->post_author == bp_loggedin_user_id() and $project->query->post->post_type == 'portfolio') {
        // post_parent is the ID of thumbnail
        $thumbnail_id = $project->query->post->post_parent;
        // So delete this project
        if ($project->delete()) {
            if ($thumbnail_id != 0) {
                wp_delete_attachment($thumbnail_id);
            }
            return true;
        }
    }
    return false;
}