DZ7.1进行积分交易时，出售方得到双倍积分的解决方法_Discuz教程

if($updateauthor) {
                        updatecredits($thread['authorid'], array($creditstransextra[1] => $thread['netprice']));
                        $db->query("UPDATE {$tablepre}members SET extcredits$creditstransextra[1]=extcredits$creditstransextra[1]+$thread[netprice] WHERE uid='$thread[authorid]'");
                }

$db->query("UPDATE {$tablepre}members SET extcredits$creditstransextra[1]=extcredits$creditstransextra[1]+$thread[netprice] WHERE uid='$thread[authorid]'");