第二部分：include/newthread.inc.php

以下为引用的内容：
这个文件处理发新帖的特定请求。
if(isset($poll)) {
        $special = 1;
} elseif(isset($trade)) {
        $special = 2;
} elseif(isset($reward)) {
        $special = 3;
} elseif(isset($activity)) {
        $special = 4;
} else {
        $special = 0;
}
这一部分的代码是用来判断帖子的类型的，1为投票，2为交易帖，3为悬赏，4为活动，0为普通帖。
        $price = intval($price);
        $price = $maxprice && !$special ? ($price <= $maxprice ? $price : $maxprice) : 0;
这里是帖子价格的赋值，超过了最大的价格的处理，特殊帖子的价格处理。
} elseif($special == 3 && $allowpostreward) {
                $rewardprice = intval($rewardprice);
                if(!$rewardprice) {
                        showmessage('reward_credits_please');
                } elseif($rewardprice > 32767) {
                        showmessage('reward_credits_overflow');
                } elseif($rewardprice < $minrewardprice || ($maxrewardprice > 0 && $rewardprice > $maxrewardprice)) {
                        showmessage('reward_credits_between');
                } elseif(($realprice = $rewardprice + ceil($rewardprice * $creditstax)) > $_DSESSION["extcredits$creditstrans"]) {
                        showmessage('reward_credits_shortage');
                }
 

                $price = $rewardprice;

                $db->query("UPDATE {$tablepre}members SET extcredits$creditstrans=extcredits$creditstrans-$realprice WHERE uid='$discuz_uid'");
前面说过3表示悬赏帖子，那么当你发表成功了一个悬赏帖子后，就会相应在cdb_members表中减少相应的扩展积分，便是上面的代码的作用了。
elseif($special == 3 && $allowpostreward) {
                $db->query("INSERT INTO {$tablepre}rewardlog (tid, authorid, netamount, dateline) VALUES ('$tid', '$discuz_uid', $realprice, '$timestamp')");
        }
后续判断如果为悬赏帖子的话就往cdb_rewardlog(悬赏记录表)里写入一条记录。
        if($attachment) {
                $searcharray = $pregarray = $replacearray = array();
                foreach($attachments as $key => $attach) {
                        $db->query("INSERT INTO {$tablepre}attachments (tid, pid, dateline, readperm, price, filename, description, filetype, filesize, attachment, downloads, isimage, uid, thumb, remote)
                                VALUES ('$tid', '$pid', '$timestamp', '$attach[perm]', '$attach[price]', '$attach[name]', '$attach[description]', '$attach[type]', '$attach[size]', '$attach[attachment]', '0', '$attach[isimage]', '$attach[uid]', '$attach[thumb]', '$attach[remote]')");
                        $searcharray[] = '[local]'.$localid[$key].'[/local]';
                        $pregarray[] = '/\[localimg=(\d{1,3}),(\d{1,3})\]'.$localid[$key].'\[\/localimg\]/is';