/**
  * Posts a topic reply
  * 
  * @access	public
  * @param	string  $api_key		Authentication Key
  * @param	string  $api_module		Module
  * @param	string	$member_field	Member field to check (valid: "id", "email", "username", "displayname")
  * @param	string	$member_key		Member key to check for
  * @param	integer	$topic_id		Topic id to post in
  * @param	string	$post_content	Posted content
  * @return	string	xml
  */
 public function postReply($api_key, $api_module, $member_field, $member_key, $topic_id, $post_content)
 {
     //-----------------------------------------
     // INIT
     //-----------------------------------------
     $api_key = IPSText::md5Clean($api_key);
     $api_module = IPSText::parseCleanValue($api_module);
     $member_field = IPSText::parseCleanValue($member_field);
     $member_key = IPSText::parseCleanValue($member_key);
     $topic_id = intval($topic_id);
     $UNCLEANED_post_content = $post_content;
     //-----------------------------------------
     // Authenticate
     //-----------------------------------------
     if ($this->__authenticate($api_key, $api_module, 'postReply') !== FALSE) {
         //-----------------------------------------
         // Add log
         //-----------------------------------------
         if (ipsRegistry::$settings['xmlrpc_log_type'] != 'failed') {
             $this->registry->DB()->insert('api_log', array('api_log_key' => $api_key, 'api_log_ip' => $_SERVER['REMOTE_ADDR'], 'api_log_date' => time(), 'api_log_query' => $this->classApiServer->raw_request, 'api_log_allowed' => 1));
         }
         //-----------------------------------------
         // Member field...
         //-----------------------------------------
         $member = IPSMember::load($member_key, 'all', $member_field);
         //-----------------------------------------
         // Got a member?
         //-----------------------------------------
         if (!$member['member_id']) {
             $this->classApiServer->apiSendError('10', "IP.Board could not locate a member using {$member_key} / {$member_field}");
         }
         //-----------------------------------------
         // Get some classes
         //-----------------------------------------
         require_once IPSLib::getAppDir('forums') . '/app_class_forums.php';
         $appClass = new app_class_forums($this->registry);
         require_once IPSLib::getAppDir('forums') . '/sources/classes/post/classPost.php';
         $_postClass = new classPost($this->registry);
         //-----------------------------------------
         // Need the topic...
         //-----------------------------------------
         $topic = $this->registry->DB()->buildAndFetch(array('select' => '*', 'from' => 'topics', 'where' => 'tid=' . $topic_id));
         //-----------------------------------------
         // Set the data
         //-----------------------------------------
         $_postClass->setIsPreview(false);
         $_postClass->setForumData($this->registry->getClass('class_forums')->forum_by_id[$topic['forum_id']]);
         $_postClass->setForumID($topic['forum_id']);
         $_postClass->setTopicID($topic_id);
         $_postClass->setTopicData($topic);
         $_postClass->setPostContent($UNCLEANED_post_content);
         $_postClass->setAuthor($member['member_id']);
         $_postClass->setPublished(true);
         $_postClass->setSettings(array('enableSignature' => 1, 'enableEmoticons' => 1, 'post_htmlstatus' => 0, 'enableTracker' => 0));
         /**
          * And post it...
          */
         try {
             if ($_postClass->addReply() === FALSE) {
                 //print $_postClass->_postErrors;
                 $this->classApiServer->apiSendError('10', "IP.Board could not add the reply " . $_postClass->_postErrors);
             }
         } catch (Exception $error) {
             $this->classApiServer->apiSendError('10', "IP.Board post class exception: " . $error->getMessage());
         }
         $this->classApiServer->apiSendReply(array('result' => 'success'));
         exit;
     }
 }