1、首先在后台的数据库备份/还原地方做一个数据库备份，因为接下来要执行几个sql文件，做好数据备份以免出现未知错误。
2、建立dede_xiazai 这个数据库表，执行以下sql:
1 CREATE TABLE `dede_xiazai` ( 2 `mid` int(11) NOT NULL, 3 `aid` int(11) NOT NULL, 4 `mtime` int(11) NOT NULL 5 ) ENGINE=MyISAM DEFAULT CHARSET=latin1;
3、在原数据库表dede_arcrank内增加两个字段 daydowns hourdowns 分别为 每天限制次数 每日限制次数，在这里默认是10次，大家可以按照自己的需求更改这个次数：DEFAULT '10'
1 ALTER TABLE `dede_arcrank` ADD `daydowns` INT(6) NOT NULL DEFAULT '10' AFTER `purviews`, ADD `hourdowns` INT(6) NOT NULL DEFAULT '10' AFTER `daydowns`;
4、找到plus文件夹下的download.php文件在191行插入：
01 //获取用户级别// 02 $rank = $dsql->GetOne("SELECT rank FROM `dede_member` WHERE mid='" . $cfg_ml->M_ID . "'"); 03 $level = $dsql->GetOne("SELECT membername,daydowns,hourdowns FROM `dede_arcrank` WHERE rank='" . $rank['rank'] . "'"); 04 //查询下载次数，限制下载次数// 05 $row = $dsql->GetOne("SELECT COUNT(mid) FROM `dede_xiazai` WHERE mid='" . $cfg_ml->M_ID . "' AND to_days(curdate())=to_days(from_unixtime(mtime))"); 06 $daycishu = $row['COUNT(mid)']; 07 $date = date("Y-m-d H:00", time()); 08 $hour = strtotime($date); 09 $row2 = $dsql->GetOne("SELECT COUNT(mid) FROM `dede_xiazai` WHERE mid='" . $cfg_ml->M_ID . "' AND mtime >= '" . $hour . "'"); 10 $hourcishu = $row2['COUNT(mid)']; 11 if ($level['daydowns'] != 0) { 12 if ($daycishu >= $level['daydowns']) { 13 $errtype = 3; 14 $moremsg = $level['membername'] . "24小时内最多能下载" . $level['daydowns'] . "个资源，您的下载次数已到达" . $daycishu . "次"; 15 include_once (DEDETEMPLATE . '/plus/view_msg.htm'); 16 exit(0); 17 } 18 } 19 if ($level['hourdowns'] != 0) { 20 if ($hourcishu >= $level['hourdowns']) { 21 $errtype = 3; 22 $moremsg = $level['membername'] . "1小时内最多能下载" . $level['hourdowns'] . "个资源，您的下载次数已到达" . $hourcishu . "次"; 23 include_once (DEDETEMPLATE . '/plus/view_msg.htm'); 24 exit(0); 25 } 26 } 27 //用户为注册会员以上级别，做下载次数记录//// 28 if ($cfg_ml->M_Rank >= 10) { 29 //下载次数记录 30 $inquery = "INSERT INTO `dede_xiazai`(mid,mtime,aid) VALUES ('" . $cfg_ml->M_ID . "','" . time() . "','.$id.'); "; 31 //记录定单 32 if (!$dsql->ExecuteNoneQuery($inquery)) { 33 ShowMsg('记录定单失败, 请返回', '-1'); 34 exit(0); 35 }