function subcomment() { 
  $data['uid'] = getUserid(); 
  $data['mtype'] = I("post.mtype", 0, 'int'); 
  if ($data['uid'] == '') { 
    echo json_encode(array("code" => -1)); 
  } else { 
    $content = addslashes(str_replace("\n", "<br />", $_POST['content'])); 
    $data['tid'] = I("post.id", 0, 'int'); //文章id 
    if (strlen(preg_replace('/\[ [^\)]+? \]/x', '', $content)) < 10) { 
      echo json_encode(array("code" => "short than 10", "error" => "评论的内容不能少于10个字符。")); 
      exit; 
    } 
    if (C("DB_PWD") != '') { 
      if (time() - session("comment_time") < 60 && session("comment_time") > 0) {//2分钟以后发布 
        echo json_encode(array("code" => "fast", "error" => "您提交评论的速度太快了，请稍后再发表评论。")); 
        exit; 
      } 
    } 
    $data['pid'] = I("post.pid", 0, 'int'); 
    $data['pid_sub'] = I("post.pid_sub", 0, 'int'); 
    $lyid = $data['pid_sub'] > 0 ? $data['pid_sub'] : $data['pid']; 
    if ($lyid > 0) { 
      $lyinfo = M("comment")->field("uid")->where("id='" . $lyid . "'")->find(); 
      $data['touid'] = $lyinfo['uid']; 
    } else { 
      $data['touid'] = 2; 
    } 
    $data['addtime'] = time(); 
    $emots = getTableFile("emot"); 
    foreach ($emots as $v) { 
      $content = str_replace("[" . $v['name'] . "]", "<img alt='" . $v['name'] . "' src='" . __APP__ . "/Public/emot/" . ($v['id'] - 1) . ".gif'>", $content); 
    } 
    $data['content'] = addslashes($content); 
    $info = M("comment")->field("id")->where("content='" . $data['content'] . "'")->find(); 
    if ($info['id']) { 
      echo json_encode(array("code" => "comment_repeat", "error" => "检测到重复评论，您似乎提交过这条评论了")); 
      exit; 
    } 
    $lastid = M("comment")->add($data); 
    $points_comment = 20; 
    if ($lastid > 0) { 
      $day_start = strtotime(date("Y-m-d")); 
      $day_end = $day_start + 3600 * 24; 
      $comment_num_day = M("comment")->where("uid = " . $data['uid'] . " AND addtime between " . $day_start . " AND " . $day_end . "")->count(); 
      if ($comment_num_day <= 5) { //少于5条每天，则添加积分 
//          addPoints("comment", $points_comment, $data['uid'], "评论获得" . $points_comment . "积分", 5, 1); 
      } 
//        addMessage('comment', $data['tid'], $data['pid'], $data['mtype'], $data['touid'], $content); 
    } 
    session("comment_time", time()); 
    echo json_encode(array("code" => 200, "comment" => $content, "points" => $points_comment)); 
  } 
}