Ошибка в истории комментариев

 
function r_User($id){
 
$sql ="SELECT u.nickname
FROM cms_users u
LEFT JOIN cms_comments c ON c.user_id = u.id
LEFT JOIN cms_ratings r ON r.item_id = c.id 
WHERE u.id = $id LIMIT 1";
 
 $result = $this->inDB->query($sql);
 
        if (!$this->inDB->num_rows($result)) { return false; }
$commen = $this->inDB->fetch_assoc($result);
 
return $commen;
}
/*******************************************************************/
function l_User($id){
 
$sql ="SELECT u.login
FROM cms_users u
LEFT JOIN cms_comments c ON c.user_id = u.id
LEFT JOIN cms_ratings r ON r.item_id = c.id 
WHERE u.id = $id LIMIT 1";
 
 $result = $this->inDB->query($sql);
 
        if (!$this->inDB->num_rows($result)) { return false; }
$commen = $this->inDB->fetch_assoc($result);
 
return $commen;
}
/*****************************************************************/
 
    public function getRComment($id) {
 
 
        $sql = "SELECT c.*,
			 u.nickname as nickname,
			 u.login as login,					
                 r.user_id as ruser,r.points as points,r.pubdate as date
                 FROM cms_comments c
                                LEFT JOIN cms_ratings r ON r.item_id = c.id
				LEFT JOIN cms_users u ON u.id = c.user_id
				LEFT JOIN cms_user_profiles p ON p.user_id = u.id
                         WHERE c.id = r.item_id AND c.target_id=$id";
 
 
        $result = $this->inDB->query($sql);
 
        if (!$this->inDB->num_rows($result)) { return false; }
 
      while($comment = $this->inDB->fetch_assoc($result)){
 
    $comment['rnick']   = implode($this->r_User($comment['ruser']));
      $comment['rlogin']   = implode($this->l_User($comment['ruser']));
 
         $comments[] = $comment;
 
}
             return $comments;
 
    }
 
 

public function getRating($id,$target_id) {
 
 
        $sql = "SELECT r.*,
			 u.nickname as nickname,
			 u.login as login,c.id as cid					
 
                 FROM cms_ratings r
                                LEFT JOIN cms_comments c ON c.target_id=$target_id AND r.item_id=c.id
				LEFT JOIN cms_users u ON u.id = r.user_id
				LEFT JOIN cms_user_profiles p ON p.user_id = u.id
                         WHERE item_id=$id ";
 
 
        $result = $this->inDB->query($sql);
 
        if (!$this->inDB->num_rows($result)) { return false; }
 
      while($rating = $this->inDB->fetch_assoc($result)){
 
    $rating ['rnick']   = implode($this->r_User($rating ['user_id']));
      $rating ['rlogin']   = implode($this->l_User($rating ['user_id']));
 
         $ratings[] = $rating ;
 
}
             return $ratings;
 
    }