/**
     * Create the first message for an article, which is a blank message
     * with the title of the article as the subject.
     *
     * @param Article $p_article
     * @param int $p_forumId
     * @return mixed
     * 		The comment created (or the one that already exists) on success,
     *  	or false on error.
     */
    private function CreateFirstComment($p_article, $p_forumId)
    {
        // Check if the first post already exists.
        $articleNumber = $p_article->getArticleNumber();
        $languageId = $p_article->getLanguageId();
        $firstPost = ArticleComment::GetCommentThreadId($articleNumber, $languageId);
        if ($firstPost) {
            return new Phorum_message($firstPost);
        }

        // Get article creator
        $user = new User($p_article->getCreatorId());
        if ($user->exists()) {
            $userId = $user->getUserId();
            $userEmail = $user->getEmail();
            $userPasswd = $user->getPassword();
            $userName = $user->getUserName();
            $userRealName = $user->getRealName();

            // Create phorum user if necessary
            $phorumUser = Phorum_user::GetByUserName($userName);
            if (!is_object($phorumUser)) {
                $phorumUser = new Phorum_user();
            }
            if (!$phorumUser->CampUserExists($userId)
            && !$phorumUser->create($userName, $userPasswd, $userEmail, $userId)) {
                return null;
            }
        } else {
            $userId = null;
            $userEmail = '';
            $userRealName = '';
        }

        // Create the comment.
        $title = $p_article->getTitle();
        $commentObj = new Phorum_message();
        if ($commentObj->create($p_forumId, $title, '', 0, 0, $userRealName,
        $userEmail, is_null($userId) ? 0 : $userId)) {
            // Link the message to the current article.
            ArticleComment::Link($articleNumber, $languageId, $commentObj->getMessageId(), true);
            return $commentObj;
        } else {
            return null;
        }
    } // method CreateFirstComment