$membersarray = $postsarray = array();
        foreach((is_array($uidarray) ? $uidarray : array($uidarray)) as $id) {
                $membersarray[intval(trim($id))]++;
        }
        foreach($membersarray as $uid => $posts) {
                $postsarray[$posts][] = $uid;
        }
        $lastpostadd = $uidarray == $discuz_uid ? ", lastpost='$timestamp'" : '';
        $creditsadd1 = '';
        if(is_array($creditsarray)) {
                foreach($creditsarray as $id => $addcredits) {
                        $creditsadd1 .= ", extcredits$id=extcredits$id$operator$addcredits*\$posts";
                }
        }
        foreach($postsarray as $posts => $uidarray) {
                $uids = implode(',', $uidarray);
                eval("\$creditsadd2 = \"$creditsadd1\";");
                $db->query("UPDATE {$tablepre}members SET posts=posts+('$operator$posts') $lastpostadd $creditsadd2 WHERE uid IN ($uids)", 'UNBUFFERED');
        }
}