欢迎使用CSDN-markdown编辑器

<?php
/**
*      [Discuz!] (C)2001-2099 Comsenz Inc.
*      This is NOT a freeware, use is subject to license terms
*
*      $Id: forum_forumdisplay.php 17186 2010-09-26 02:22:54Z monkey $
*/
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
require_once libfile('function/forumlist');
if($_G['forum']['redirect']) {
dheader("Location: {$_G[forum][redirect]}");
} elseif($_G['forum']['type'] == 'group') {
dheader("Location: forum.php?gid=$_G[fid]");
} elseif(empty($_G['forum']['fid'])) {
showmessage('forum_nonexistence', NULL);
}
$_G['action']['fid'] = $_G['fid'];
$_G['gp_specialtype'] = isset($_G['gp_specialtype']) ? $_G['gp_specialtype'] : '';
$_G['gp_dateline'] = isset($_G['gp_dateline']) ? intval($_G['gp_dateline']) : 0;
$_G['gp_digest'] = isset($_G['gp_digest']) ? 1 : '';
$_G['gp_archiveid'] = isset($_G['gp_archiveid']) ? intval($_G['gp_archiveid']) : 0;
$showoldetails = isset($_G['gp_showoldetails']) ? $_G['gp_showoldetails'] : '';
switch($showoldetails) {
case 'no': dsetcookie('onlineforum', ''); break;
case 'yes': dsetcookie('onlineforum', 1, 31536000); break;
}
$_G['forum']['name'] = strip_tags($_G['forum']['name']) ? strip_tags($_G['forum']['name']) : $_G['forum']['name'];
$_G['forum']['extra'] = unserialize($_G['forum']['extra']);
if(!is_array($_G['forum']['extra'])) {
$_G['forum']['extra'] = array();
}

$threadtable_info = !empty($_G['cache']['threadtable_info']) ? $_G['cache']['threadtable_info'] : array();
//存档信息查询
$forumarchive = array();
if($_G['forum']['archive']) {
$query = DB::query("SELECT * FROM ".DB::table('forum_forum_threadtable')." WHERE fid='{$_G['fid']}'");
while($archive = DB::fetch($query)) {
$forumarchive[$archive['threadtableid']] = array(
'displayname' => htmlspecialchars($threadtable_info[$archive['threadtableid']]['displayname']),
'threads' => $archive['threads'],
'posts' => $archive['posts'],
);
if(empty($forumarchive[$archive['threadtableid']]['displayname'])) {
$forumarchive[$archive['threadtableid']]['displayname'] = lang('forum/template', 'forum_archive').' '.$archive['threadtableid'];
}
}
}
//导航
if($_G['forum']['type'] == 'forum') {
if(empty($_G['gp_archiveid'])) {
$navigation = '<em>›</em> <a href="forum.php">'.$_G['setting']['navs'][2]['navname'].'</a> <em>›</em> <a href="forum.php?mod=forumdisplay&fid='.$_G['forum']['fid'].'">'.$_G['forum']['name'].'</a>';
} else {
$navigation = '<em>›</em> <a href="forum.php">'.$_G['setting']['navs'][2]['navname'].'</a> <em>›</em> '.'<a href="forum.php?mod=forumdisplay&fid='.$_G['fid'].'">'.$_G['forum']['name'].'</a> <em>›</em> '.$forumarchive[$_G['gp_archiveid']]['displayname'];
}
$navtitle = $_G['forum']['name'];
} else {
$forumup = $_G['forum']['status'] == 3 ? '' : $_G['cache']['forums'][$_G['forum']['fup']]['name'];
if(empty($_G['gp_archiveid'])) {
$navigation = '<em>›</em> <a href="forum.php">'.$_G['setting']['navs'][2]['navname'].'</a> <em>›</em> <a href="forum.php?mod=forumdisplay&fid='.$_G['forum']['fup'].'">'.$forumup.'</a> <em>›</em> '.$_G['forum']['name'];
} else {
$navigation = '<em>›</em> <a href="forum.php">'.$_G['setting']['navs'][2]['navname'].'</a> <em>›</em> <a href="forum.php?mod=forumdisplay&fid='.$_G['forum']['fup'].'">'.$forumup.'</a> <em>›</em> '.'<a href="forum.php?mod=forumdisplay&fid='.$_G['fid'].'">'.$_G['forum']['name'].'</a> <em>›</em> '.$forumarchive[$_G['gp_archiveid']]['displayname'];
}
$navtitle = $_G['forum']['name'].' - '.strip_tags($forumup);
}
$metakeywords = $_G['forum']['keywords'];
if(!$metakeywords) {
$metakeywords = $_G['forum']['name'];
}
$metadescription = $_G['forum']['description'];
if(!$metadescription) {
$metadescription = $_G['forum']['name'];
}
$rssauth = $_G['rssauth'];
$rsshead = $_G['setting']['rssstatus'] ? ('<link rel="alternate" type="application/rss+xml" title="'.$_G['setting']['bbname'].' - '.$navtitle.'" href="'.$_G['siteurl'].'forum.php?mod=rss&fid='.$_G['fid'].'&auth='.$rssauth."\" />\n") : '';
$metakeywords = !$_G['forum']['keywords'] ? $_G['forum']['name'] : $_G['forum']['keywords'];
$metadescription = !$_G['forum']['description'] ? $_G['forum']['name'] : strip_tags($_G['forum']['description']);
//俱乐部信息初始化，包含有标题，SEO字段，会员访问权限的判定，在线会员，管理员列表，俱乐部的缓存信息，logo，banner
if($_G['forum']['status'] == 3) {
$navtitle = $_G['forum']['name'].' - '.$_G['setting']['navs'][3]['navname'];
$metakeywords = $_G['forum']['metakeywords'];
$metadescription = $_G['forum']['description'];
$_G['seokeywords'] = $_G['setting']['seokeywords']['group'];
$_G['seodescription'] = $_G['setting']['seodescription']['group'];
$action = getgpc('action') ? $_G['gp_action'] : 'list';
require_once libfile('function/group');
$status = groupperm($_G['forum'], $_G['uid']);
if($status == -1) {
showmessage('forum_not_group', 'group.php');
} elseif($status == 1) {
showmessage('forum_group_status_off');
} elseif($status == 2) {
showmessage('forum_group_noallowed', 'forum.php?mod=group&fid='.$_G['fid']);
} elseif($status == 3) {
showmessage('forum_group_moderated', 'forum.php?mod=group&fid='.$_G['fid']);
}
$_G['forum']['icon'] = get_groupimg($_G['forum']['icon'], 'icon');
$_G['grouptypeid'] = $_G['forum']['fup'];
$_G['forum']['dateline'] = dgmdate($_G['forum']['dateline'], 'd');
$groupnav = get_groupnav($_G['forum']);
$onlinemember = grouponline($_G['fid']);
$groupmanagers = $_G['forum']['moderators'];
$groupcache = getgroupcache($_G['fid'], array('replies', 'views', 'digest', 'lastpost', 'ranking', 'activityuser', 'newuserlist'));
}
$_G['forum']['banner'] = get_forumimg($_G['forum']['banner']);
// 论坛浏览权限判断
if($_G['forum']['viewperm'] && !forumperm($_G['forum']['viewperm']) && !$_G['forum']['allowview']) {
showmessagenoperm('viewperm', $_G['fid'], $_G['forum']['formulaperm']);
} elseif($_G['forum']['formulaperm']) {
formulaperm($_G['forum']['formulaperm']);
}
// 加密板块
if($_G['forum']['password']) {
if($_G['gp_action'] == 'pwverify') {
if($_G['gp_pw'] != $_G['forum']['password']) {
showmessage('forum_passwd_incorrect', NULL);
} else {
dsetcookie('fidpw'.$_G['fid'], $_G['gp_pw']);
showmessage('forum_passwd_correct', "forum.php?mod=forumdisplay&fid=$_G[fid]");
}
} elseif($_G['forum']['password'] != $_G['cookie']['fidpw'.$_G['fid']]) {
include template('forum/forumdisplay_passwd');
exit();
}
}
//note Mysql 多服务器支持 MultiServer
if(!isset($_G['cookie']['collapse']) || strpos($_G['cookie']['collapse'], 'forum_rules_'.$_G['fid']) === FALSE) {
$collapse['forum_rules'] = '';
$collapse['forum_rulesimg'] = 'no';
} else {
$collapse['forum_rules'] = 'display: none';
$collapse['forum_rulesimg'] = 'yes';
}
//note 对应的 thread 表
$threadtableids = !empty($_G['cache']['threadtableids']) ? $_G['cache']['threadtableids'] : array();
$threadtable = $_G['gp_archiveid'] && in_array($_G['gp_archiveid'], $threadtableids) ? "forum_thread_{$_G['gp_archiveid']}" : 'forum_thread';
if($_G['setting']['allowmoderatingthread'] && $_G['uid']) {
$threadmodcount = DB::result_first("SELECT COUNT(*) FROM ".DB::table($threadtable)." WHERE fid='{$_G['fid']}' AND displayorder='-2' AND authorid='{$_G['uid']}'");
}
if($_G['forum']['modworks'] || $_G['forum']['modnewposts']) {
$_G['forum']['modnewposts'] && $_G['forum']['modworks'] = 1;
$modnum = $_G['group']['allowmodpost'] ? getcountofposts(DB::table('forum_post'), "invisible='-2' AND fid='$_G[fid]'") : 0;
$modusernum = $_G['group']['allowmoduser'] ? DB::result_first("SELECT COUNT(*) FROM ".DB::table('common_member_validate')." WHERE status='0'") : 0;
}
$optionadd = $filterurladd = $searchsorton = '';
$quicksearchlist = array();
if(!empty($_G['forum']['threadsorts']['types'])) {
require_once libfile('function/threadsort');
$showpic = intval($_G['gp_showpic']);
$templatearray = $sortoptionarray = array();
foreach($_G['forum']['threadsorts']['types'] as $stid => $sortname) {
loadcache(array('threadsort_option_'.$stid, 'threadsort_template_'.$stid));
$templatearray[$stid] = $_G['cache']['threadsort_template_'.$stid]['subject'];
$sortoptionarray[$stid] = $_G['cache']['threadsort_option_'.$stid];
}
if(!empty($_G['forum']['threadsorts']['defaultshow']) && empty($_G['gp_sortid']) && empty($_G['gp_sortall'])) {
$_G['gp_sortid'] = $_G['forum']['threadsorts']['defaultshow'];
$filterurladd = '&filter=sort';
}
$_G['gp_sortid'] = $_G['gp_sortid'] ? $_G['gp_sortid'] : $_G['gp_searchsortid'];
if(isset($_G['gp_sortid']) && $_G['forum']['threadsorts']['types'][$_G['gp_sortid']]) {
$searchsortoption = $sortoptionarray[$_G['gp_sortid']];
$quicksearchlist = quicksearch($searchsortoption);
}
}
$moderatedby = $_G['forum']['status'] != 3 ? moddisplay($_G['forum']['moderators'], 'forumdisplay') : '';
$_G['gp_highlight'] = empty($_G['gp_highlight']) ? '' : htmlspecialchars($_G['gp_highlight']);
//note 论坛是否自动关闭
if($_G['forum']['autoclose']) {
$closedby = $_G['forum']['autoclose'] > 0 ? 'dateline' : 'lastpost';
$_G['forum']['autoclose'] = abs($_G['forum']['autoclose']) * 86400;
}
//处理子论坛
$subexists = 0;
foreach($_G['cache']['forums'] as $sub) {
if($sub['type'] == 'sub' && $sub['fup'] == $_G['fid'] && (!$_G['setting']['hideprivate'] || !$sub['viewperm'] || forumperm($sub['viewperm']) || strstr($sub['users'], "\t$_G[uid]\t"))) {
if(!$sub['status']) {
continue;
}
$subexists = 1;
$sublist = array();
$sql = !empty($_G['member']['accessmasks']) ? "SELECT f.fid, f.fup, f.type, f.name, f.threads, f.posts, f.todayposts, f.lastpost, f.domain, ff.description, ff.moderators, ff.icon, ff.viewperm, ff.extra, ff.redirect, a.allowview FROM ".DB::table('forum_forum')." f
LEFT JOIN ".DB::table('forum_forumfield')." ff ON ff.fid=f.fid
LEFT JOIN ".DB::table('forum_access')." a ON a.uid='$_G[uid]' AND a.fid=f.fid
WHERE fup='$_G[fid]' AND status>'0' AND type='sub' ORDER BY f.displayorder"
: "SELECT f.fid, f.fup, f.type, f.name, f.threads, f.posts, f.todayposts, f.lastpost, f.domain, ff.description, ff.moderators, ff.icon, ff.viewperm, ff.extra, ff.redirect FROM ".DB::table('forum_forum')." f
LEFT JOIN ".DB::table('forum_forumfield')." ff USING(fid)
WHERE f.fup='$_G[fid]' AND f.status>'0' AND f.type='sub' ORDER BY f.displayorder";
$query = DB::query($sql);
while($sub = DB::fetch($query)) {
$sub['extra'] = unserialize($sub['extra']);
if(!is_array($sub['extra'])) {
$sub['extra'] = array();
}
if(forum($sub)) {
$sub['orderid'] = count($sublist);
$sublist[] = $sub;
}
}
break;
}
}
if(!empty($_G['gp_archiveid']) && in_array($_G['gp_archiveid'], $threadtableids)) {
$subexists = 0;
}
if($subexists) {
if($_G['forum']['forumcolumns']) {
$_G['forum']['forumcolwidth'] = (floor(100 / $_G['forum']['forumcolumns']) - 0.1).'%';
$_G['forum']['subscount'] = count($sublist);
$_G['forum']['endrows'] = '';
if($colspan = $_G['forum']['subscount'] % $_G['forum']['forumcolumns']) {
while(($_G['forum']['forumcolumns'] - $colspan) > 0) {
$_G['forum']['endrows'] .= '<td> </td>';
$colspan ++;
}
$_G['forum']['endrows'] .= '</tr>';
}
}
if(empty($_G['cookie']['collapse']) || strpos($_G['cookie']['collapse'], 'subforum_'.$_G['fid']) === FALSE) {
$collapse['subforum'] = '';
$collapseimg['subforum'] = 'collapsed_no.gif';
} else {
$collapse['subforum'] = 'display: none';
$collapseimg['subforum'] = 'collapsed_yes.gif';
}
}
$page = $_G['page'];
$subforumonly = $_G['forum']['simple'] & 1;
$simplestyle = !$_G['forum']['allowside'] || $page > 1 ? true : false;
if($subforumonly) {
$_G['setting']['fastpost'] = false;
$forummenu = '';
if($_G['setting']['forumjump']) {
$forummenu = forumselect(FALSE, 1);
}
if($_G['gp_archiver']) {
include loadarchiver('forum/forumdisplay');
} else {
include template('diy:forum/forumdisplay:'.$_G['fid']);
}
exit();
}
$page = $_G['setting']['threadmaxpages'] && $page > $_G['setting']['threadmaxpages'] ? 1 : $page;
$start_limit = ($page - 1) * $_G['tpp'];
//note 版主推荐主题处理
if($_G['forum']['modrecommend'] && $_G['forum']['modrecommend']['open']) {
$_G['forum']['recommendlist'] = recommendupdate($_G['fid'], $_G['forum']['modrecommend'], '', 1);
}
$recommendgroups = array();
if($_G['forum']['status'] != 3) {
loadcache('forumrecommend');
$recommendgroups = $_G['cache']['forumrecommend'][$_G['fid']];
}
//公告
if(!$simplestyle || !$_G['forum']['allowside'] && $page == 1) {
if($_G['cache']['announcements_forum']) {
$announcement = $_G['cache']['announcements_forum'];
$announcement['starttime'] = dgmdate($announcement['starttime'], 'd');
} else {
$announcement = NULL;
}
}
/*帖子的处理过程*/
$filteradd = $sortoptionurl = $sp = '';
$sorturladdarray = $selectadd = array();
//排序
$forumdisplayadd = array('orderby' => '');
//特需主题数组
$specialtype = array('poll' => 1, 'trade' => 2, 'reward' => 3, 'activity' => 4, 'debate' => 5);
//刷选字段数组
$filterfield = array('digest', 'recommend', 'typeid', 'sortid', 'special', 'dateline', 'specialtype', 'author', 'reply', 'view', 'lastpost', 'heat', 'page', 'moderate');
//将filterfield付给forumdisplayadd
foreach ($filterfield as $v) {
$forumdisplayadd[$v] = '';
}
//刷选参数
$filter = isset($_G['gp_filter']) && in_array($_G['gp_filter'], $filterfield) ? $_G['gp_filter'] : '';
if($filter) {
if($query_string = $_SERVER['QUERY_STRING']) {
$query_string = substr($query_string, (strpos($query_string, "&") + 1));
parse_str($query_string, $geturl);
$geturl = daddslashes($geturl, 1);
if($geturl && is_array($geturl)) {
$issort = isset($_G['gp_sortid']) && isset($_G['forum']['threadsorts']['types'][$_G['gp_sortid']]) && $quicksearchlist ? TRUE : FALSE;
$selectadd = $issort ? $geturl : array();
foreach($filterfield as $option) {
foreach($geturl as $field => $value) {
if(in_array($field, $filterfield) && $option != $field && $field != 'page') {
$forumdisplayadd[$option] .= '&'.$field.'='.$value;
}
}
if($issort) {
$sfilterfield = array_merge(array('filter', 'sortid', 'orderby', 'fid'), $filterfield);
foreach($geturl as $soption => $value) {
$forumdisplayadd[$option] .= !in_array($soption, $sfilterfield) ? "&$soption=$value" : '';
}
}
}
if($issort && is_array($quicksearchlist)) {
foreach($quicksearchlist as $option) {
$identifier = $option['identifier'];
foreach($geturl as $option => $value) {
$sorturladdarray[$identifier] .= !in_array($option, array('filter', 'sortid', 'orderby', 'fid', 'searchsort', $identifier)) ? "&$option=$value" : '';
}
}
}
foreach($geturl as $field => $value) {
if(in_array($field, $filterfield) && $field != 'page') {
$filteradd .= $sp;
if($field == 'digest') {
$filteradd .= "AND t.digest>'0'";
} elseif($field == 'recommend' && $_G['setting']['recommendthread']['status']) {
$filteradd .= "AND t.recommends>'".intval($_G['setting']['recommendthread']['iconlevels'][0])."'";
} elseif($field == 'specialtype') {
$filteradd .= "AND t.special='$specialtype[$value]'";
} elseif($field == 'dateline') {
$filteradd .= $value ? "AND t.dateline>='".(TIMESTAMP - $value)."'" : '';
} else {
$filteradd .= "AND t.$field='$value'";
}
$sp = ' ';
}
}
}
}
$simplestyle = true;
}
//排序字段
if(!empty($_G['gp_orderby']) && in_array($_G['gp_orderby'], array('lastpost', 'dateline', 'replies', 'views', 'recommends', 'heats'))) {
$forumdisplayadd['orderby'] .= '&orderby='.$_G['gp_orderby'];
} else {
$_G['gp_orderby'] = isset($_G['cache']['forums'][$_G['fid']]['orderby']) ? $_G['cache']['forums'][$_G['fid']]['orderby'] : 'lastpost';
}
//排序
if(!empty($_G['gp_ascdesc']) && in_array($ascdesc, array('ASC', 'DESC'))) {
$forumdisplayadd['ascdesc'] .= '&ascdesc='.$_G['gp_ascdesc'];
} else {
$_G['gp_ascdesc'] = isset($_G['cache']['forums'][$_G['fid']]['ascdesc']) ? $_G['cache']['forums'][$_G['fid']]['ascdesc'] : 'DESC';
}
$check = array();
$check[$filter] = $check[$_G['gp_orderby']] = $check[$_G['gp_ascdesc']] = 'selected="selected"';
if(($_G['forum']['status'] != 3 && $_G['forum']['allowside']) || !empty($_G['forum']['threadsorts']['templatelist'])) {
updatesession();
$onlinenum = getonlinenum($_G['fid']);
//note 论坛在线状态 0 不显示 1 仅在首页显示 2 仅在分论坛显示 3 在首页和分论坛显示
if(!IS_ROBOT && ($_G['setting']['whosonlinestatus'] == 2 || $_G['setting']['whosonlinestatus'] == 3)) {
$_G['setting']['whosonlinestatus'] = 1;
$detailstatus = $showoldetails == 'yes' || (((!isset($_G['cookie']['onlineforum']) && !$_G['setting']['whosonline_contract']) || $_G['cookie']['onlineforum']) && !$showoldetails);
if($detailstatus) {
$actioncode = lang('forum/action');
$whosonline = array();
$forumname = strip_tags($_G['forum']['name']);

//note 取得在线详细信息
$query = DB::query("SELECT uid, groupid, username, invisible, lastactivity FROM ".DB::table('common_session')." WHERE uid>'0' AND fid='$_G[fid]' AND invisible='0' ORDER BY lastactivity DESC LIMIT 12");
$_G['setting']['whosonlinestatus'] = 1;
while($online = DB::fetch($query)) {
if($online['uid']) {
$online['icon'] = isset($_G['cache']['onlinelist'][$online['groupid']]) ? $_G['cache']['onlinelist'][$online['groupid']] : $_G['cache']['onlinelist'][0];
} else {
$online['icon'] = $_G['cache']['onlinelist'][7];
$online['username'] = $_G['cache']['onlinelist']['guest'];
}
$online['lastactivity'] = dgmdate($online['lastactivity'], 't');
$whosonline[] = $online;
}
unset($online);
}
} else {
$_G['setting']['whosonlinestatus'] = 0;
}
}
if($_G['forum']['threadsorts']['types'] && $sortoptionarray && ($_G['gp_searchoption'] || $_G['gp_searchsort'])) {
$sortid = intval($_G['gp_sortid']);
if($_G['gp_searchoption']){
$forumdisplayadd['page'] = '&sortid='.$sortid;
foreach($_G['gp_searchoption'] as $optionid => $option) {
$identifier = $sortoptionarray[$sortid][$optionid]['identifier'];
$forumdisplayadd['page'] .= $option['value'] ? "&searchoption[$optionid][value]=$option[value]&searchoption[$optionid][type]=$option[type]" : '';
}
}
if($searchsorttids = sortsearch($_G['gp_sortid'], $sortoptionarray, $_G['gp_searchoption'], $selectadd, $_G['fid'])) {
$filteradd .= "AND t.tid IN (".dimplode($searchsorttids).")";
}
}
if(empty($filter) && empty($_G['gp_sortid']) && empty($_G['gp_archiveid']) && empty($_G['forum']['archive'])) {
$_G['forum_threadcount'] = $_G['forum']['threads'];
} elseif(!$_G['gp_moderate']) {
$indexadd = '';
if(strexists($filteradd, "t.digest>'0'")) {
$indexadd = " FORCE INDEX (digest) ";
}
$_G['forum_threadcount'] = DB::result_first("SELECT COUNT(*) FROM ".DB::table($threadtable)." t $indexadd WHERE t.fid='{$_G['fid']}' $filteradd AND t.displayorder>='0'");
}
//note 全局置顶
$thisgid = $_G['forum']['type'] == 'forum' ? $_G['forum']['fup'] : (!empty($_G['cache']['forums'][$_G['forum']['fup']]['fup']) ? $_G['cache']['forums'][$_G['forum']['fup']]['fup'] : 0);
$forumstickycount = $stickycount = $stickytids = 0;
if($_G['setting']['globalstick'] && $_G['forum']['allowglobalstick']) {
$stickytids = $_G['cache']['globalstick']['global']['tids'].(empty($_G['cache']['globalstick']['categories'][$thisgid]['count']) ? '' : ','.$_G['cache']['globalstick']['categories'][$thisgid]['tids']);
$stickytids = trim($stickytids, ', ');
if ($stickytids === ''){
$stickytids = '0';
}
//note 全局和分类置顶
if($_G['forum']['status'] != 3) {
$stickycount = $_G['cache']['globalstick']['global']['count'];
if(!empty($_G['cache']['globalstick']['categories'][$thisgid])) {
$stickycount += $_G['cache']['globalstick']['categories'][$thisgid]['count'];
}
}
}
//note 多版块置顶
$forumstickytids = array();
loadcache('forumstick');
$_G['cache']['forumstick'][$_G['fid']] = isset($_G['cache']['forumstick'][$_G['fid']]) ? $_G['cache']['forumstick'][$_G['fid']] : array();
$forumstickycount = count($_G['cache']['forumstick'][$_G['fid']]);
foreach($_G['cache']['forumstick'][$_G['fid']] as $forumstickthread) {
$forumstickytids[] = $forumstickthread['tid'];
}
if(!empty($forumstickytids)) {
$forumstickytids = dimplode($forumstickytids);
$stickytids .= ", $forumstickytids";
}
$stickycount += $forumstickycount;
//note 如果存在$digest 并且开启全局置顶，那么页数为 $threadcount + $stickycount，也就是包含了置顶帖
$filterbool = !empty($filter) && in_array($filter, $filterfield);
$_G['forum_threadcount'] += $filterbool ? 0 : $stickycount;
$forumdisplayadd['page'] = !empty($forumdisplayadd['page']) ? $forumdisplayadd['page'] : '';
$multipage_archive = $_G['gp_archiveid'] && in_array($_G['gp_archiveid'], $threadtableids) ? "&archiveid={$_G['gp_archiveid']}" : '';
$multipage = multi($_G['forum_threadcount'], $_G['tpp'], $page, "forum.php?mod=forumdisplay&fid=$_G[fid]".($filter ? "&filter=$filter" : '')."$forumdisplayadd[orderby]$forumdisplayadd$multipage_archive", $_G['setting']['threadmaxpages']);
$extra = rawurlencode(!IS_ROBOT ? 'page='.$page.($forumdisplayadd['page'] ? '&filter='.$filter.$forumdisplayadd['page'] : '').($forumdisplayadd['orderby'] ? $forumdisplayadd['orderby'] : '') : 'page=1');
$separatepos = 0;
$_G['forum_threadlist'] = $threadids = array();
$_G['forum_colorarray'] = array('', '#EE1B2E', '#EE5023', '#996600', '#3C9D40', '#2897C5', '#2B65B7', '#8F2A90', '#EC1282');
$displayorderadd = !$filterbool && $stickycount ? 't.displayorder IN (0, 1)' : 't.displayorder IN (0, 1, 2, 3, 4)';
if(($start_limit && $start_limit > $stickycount) || !$stickycount || $filterbool) {
$indexadd = '';
if(strexists($filteradd, "t.digest>'0'")) {
$indexadd = " FORCE INDEX (digest) ";
}
$querysticky = '';
$query = DB::query("SELECT t.* FROM ".DB::table($threadtable)." t $indexadd
WHERE t.fid='{$_G['fid']}' $filteradd AND ($displayorderadd)
ORDER BY t.displayorder DESC, t.$_G[gp_orderby] $_G[gp_ascdesc]
LIMIT ".($filterbool ? $start_limit : $start_limit - $stickycount).", $_G[tpp]");
//note 有置顶主题
} else {
//note 查询置顶帖，并根据所在页，找出该取出的置顶帖
$querysticky = DB::query("SELECT t.* FROM ".DB::table($threadtable)." t
WHERE t.tid IN ($stickytids) AND (t.displayorder IN (2, 3, 4))
ORDER BY displayorder DESC, $_G[gp_orderby] $_G[gp_ascdesc]
LIMIT $start_limit, ".($stickycount - $start_limit < $_G['tpp'] ? $stickycount - $start_limit : $_G['tpp']));

//note 判断是否查询主题　读取长度：($_G['tpp'] - $stickycount + $start_limit)　条件：$start_limit < $stickycount
if($_G['tpp'] - $stickycount + $start_limit > 0) {
$query = DB::query("SELECT t.* FROM ".DB::table($threadtable)." t
WHERE t.fid='{$_G['fid']}' $filteradd AND ($displayorderadd)
ORDER BY displayorder DESC, $_G[gp_orderby] $_G[gp_ascdesc]
LIMIT ".($_G['tpp'] - $stickycount + $start_limit));
} else {
$query = '';
}
}
$_G['ppp'] = $_G['forum']['threadcaches'] && !$_G['uid'] ? $_G['setting']['postperpage'] : $_G['ppp'];
$page = $_G['page'];
$verify = $verifyuids = $grouptids = array();
while(($querysticky && $thread = DB::fetch($querysticky)) || ($query && $thread = DB::fetch($query))) {
$thread['lastposterenc'] = rawurlencode($thread['lastposter']);
if($thread['typeid'] && !empty($_G['forum']['threadtypes']['prefix']) && isset($_G['forum']['threadtypes']['types'][$thread['typeid']])) {
if($_G['forum']['threadtypes']['prefix'] == 1) {
$thread['typehtml'] = '<em>[<a href="forum.php?mod=forumdisplay&fid='.$_G['fid'].'&filter=typeid&typeid='.$thread['typeid'].'">'.$_G['forum']['threadtypes']['types'][$thread['typeid']].'</a>]</em>';
} elseif($_G['forum']['threadtypes']['icons'][$thread['typeid']] && $_G['forum']['threadtypes']['prefix'] == 2) {
$thread['typehtml'] = '<em><a title="'.$_G['forum']['threadtypes']['types'][$thread['typeid']].'" href="forum.php?mod=forumdisplay&fid='.$_G['fid'].'&filter=typeid&typeid='.$thread['typeid'].'">'.'<img style="vertical-align: middle;padding-right:4px;" src="'.$_G['forum']['threadtypes']['icons'][$thread['typeid']].'" alt="'.$_G['forum']['threadtypes']['types'][$thread['typeid']].'" /></a></em>';
}
} else {
$thread['typeid'] = $thread['typehtml'] = '';
}
$thread['sorthtml'] = $thread['sortid'] && !empty($_G['forum']['threadsorts']['prefix']) && isset($_G['forum']['threadsorts']['types'][$thread['sortid']]) ?
'<em>[<a href="forum.php?mod=forumdisplay&fid='.$_G['fid'].'&filter=sortid&sortid='.$thread['sortid'].'">'.$_G['forum']['threadsorts']['types'][$thread['sortid']].'</a>]</em>' : '';
$thread['multipage'] = '';
$topicposts = $thread['special'] ? $thread['replies'] : $thread['replies'] + 1;
$multipate_archive = $_G['gp_archiveid'] && in_array($_G['gp_archiveid'], $threadtableids) ? "archiveid={$_G['gp_archiveid']}" : '';
if($topicposts > $_G['ppp']) {
$pagelinks = '';
$thread['pages'] = ceil($topicposts / $_G['ppp']);
$realtid = $_G['forum']['status'] != 3 && $thread['isgroup'] == 1 ? $thread['closed'] : $thread['tid'];
for($i = 2; $i <= 6 && $i <= $thread['pages']; $i++) {
$pagelinks .= "<a href=\"forum.php?mod=viewthread&tid=$realtid&".(!empty($multipate_archive) ? "$multipate_archive&" : '')."extra=$extra&page=$i\">$i</a>";
}
if($thread['pages'] > 6) {
$pagelinks .= "..<a href=\"forum.php?mod=viewthread&tid=$realtid&".(!empty($multipate_archive) ? "$multipate_archive&" : '')."extra=$extra&page=$thread[pages]\">$thread[pages]</a>";
}
$thread['multipage'] = ' ...'.$pagelinks;
}
if($thread['highlight']) {
$string = sprintf('%02d', $thread['highlight']);
$stylestr = sprintf('%03b', $string[0]);
$thread['highlight'] = ' style="';
$thread['highlight'] .= $stylestr[0] ? 'font-weight: bold;' : '';
$thread['highlight'] .= $stylestr[1] ? 'font-style: italic;' : '';
$thread['highlight'] .= $stylestr[2] ? 'text-decoration: underline;' : '';
$thread['highlight'] .= $string[1] ? 'color: '.$_G['forum_colorarray'][$string[1]] : '';
$thread['highlight'] .= '"';
} else {
$thread['highlight'] = '';
}
$thread['recommendicon'] = '';
if(!empty($_G['setting']['recommendthread']['status']) && $thread['recommends']) {
foreach($_G['setting']['recommendthread']['iconlevels'] as $k => $i) {
if($thread['recommends'] > $i) {
$thread['recommendicon'] = $k+1;
break;
}
}
}
$thread['moved'] = $thread['heatlevel'] = 0;
if($_G['forum']['status'] != 3 && ($thread['closed'] || ($_G['forum']['autoclose'] && TIMESTAMP - $thread[$closedby] > $_G['forum']['autoclose']))) {
$thread['new'] = 0;
if($thread['isgroup'] == 1) {
$thread['folder'] = 'common';
$grouptids[] = $thread['closed'];
} else {
if($thread['closed'] > 1) {
$thread['moved'] = $thread['tid'];
$thread['replies'] = '-';
$thread['views'] = '-';
}
$thread['folder'] = 'lock';
}
} elseif($_G['forum']['status'] == 3 && $thread['closed'] == 1) {
$thread['folder'] = 'lock';
} else {
$thread['folder'] = 'common';
if(!IS_ROBOT && (empty($_G['cookie']['oldtopics']) || strpos($_G['cookie']['oldtopics'], 'D'.$thread['tid'].'D') === FALSE)) {
$thread['new'] = 1;
$thread['folder'] = 'new';
} else {
$thread['new'] = 0;
}
$thread['weeknew'] = $thread['new'] && TIMESTAMP - 604800 <= $thread['dateline'];
if($thread['replies'] > $thread['views']) {
$thread['views'] = $thread['replies'];
}
if($_G['setting']['heatthread']['iconlevels']) {
foreach($_G['setting']['heatthread']['iconlevels'] as $k => $i) {
if($thread['heats'] > $i) {
$thread['heatlevel'] = $k + 1;
break;
}
}
}
}
$thread['dateline'] = dgmdate($thread['dateline'], 'd');
$thread['lastpost'] = dgmdate($thread['lastpost'], 'u');
if(in_array($thread['displayorder'], array(1, 2, 3, 4))) {
$thread['id'] = 'stickthread_'.$thread['tid'];
$separatepos++;
} else {
$thread['id'] = 'normalthread_'.$thread['tid'];
}
if(isset($_G['setting']['verify']['enabled']) && $_G['setting']['verify']['enabled']) {
$verifyuids[$thread['authorid']] = $thread['authorid'];
}
$threadids[] = $thread['tid'];
$_G['forum_threadlist'][] = $thread;
}
if($_G['setting']['verify']['enabled'] && $verifyuids) {
$verifyquery = DB::query("SELECT * FROM ".DB::table('common_member_verify')." WHERE uid IN(".dimplode($verifyuids).")");
while($value = DB::fetch($verifyquery)) {
foreach($_G['setting']['verify'] as $vid => $vsetting) {
if($vsetting['available'] && $vsetting['showicon'] && !empty($vsetting['icon']) && $value['verify'.$vid] == 1) {
$verify[$value['uid']] .= "<a href=\"home.php?mod=spacecp&ac=profile&op=verify&vid=$vid\" target=\"_blank\">".(!empty($vsetting['icon']) ? '<img src="'.$vsetting['icon'].'" class="vm" alt="'.$vsetting['title'].'" title="'.$vsetting['title'].'" />' : $vsetting['title']).'</a>';
}
}
}
}
$_G['forum_threadnum'] = count($_G['forum_threadlist']) - $separatepos;
if(!empty($grouptids)) {
$query = DB::query("SELECT t.tid, f.name, f.fid FROM ".DB::table('forum_thread')." t LEFT JOIN ".DB::table('forum_forum')." f ON f.fid=t.fid WHERE t.tid IN(".dimplode($grouptids).")");
while($row = DB::fetch($query)) {
$groupnames[$row['tid']]['name'] = $row['name'];
$groupnames[$row['tid']]['fid'] = $row['fid'];
}
}
$stemplate = $sortexpiration = null;
if($_G['forum']['threadsorts']['types'] && $sortoptionarray && $templatearray) {
$sortid = intval($_G['gp_sortid']);
$sortlistarray = showsorttemplate($_G['gp_sortid'], $_G['fid'], $sortoptionarray, $templatearray, $_G['forum_threadlist'], $threadids);
$stemplate = $sortlistarray['template'];
$sortexpiration = $sortlistarray['expiration'];
if(($_G['gp_searchoption'] || $_G['gp_searchsort']) && empty($searchsorttids)) {
$_G['forum_threadlist'] = $multipage = '';
}
}
$separatepos = $separatepos ? $separatepos + 1 : 0;
$_G['setting']['visitedforums'] = $_G['setting']['visitedforums'] ? visitedforums() : '';
$oldthreads = array();
$oldtopics = isset($_G['cookie']['oldtopics']) ? $_G['cookie']['oldtopics'] : 'D';
if($_G['setting']['visitedthreads'] && $oldtopics) {
$oldtids = array_slice(explode('D', $oldtopics), 0, $_G['setting']['visitedthreads']);
$oldtidsnew = array();
foreach($oldtids as $oldtid) {
$oldtid && $oldtidsnew[] = $oldtid;
}
if($oldtidsnew) {
$query = DB::query("SELECT tid, subject FROM ".DB::table('forum_thread')." WHERE tid IN (".dimplode($oldtidsnew).")");
while($oldthread = DB::fetch($query)) {
$oldthreads[$oldthread['tid']] = $oldthread['subject'];
}
}
}
$forummenu = '';
if(!$_G['uid']) {
$guestfastpost = $_G['setting']['fastpost'] && $_G['perm']['allowpost'] && !$_G['forum']['allowspecialonly'] && !$_G['forum']['threadsorts']['required'];
$_G['perm']['allowpost'] = (!$_G['forum']['postperm'] && $_G['perm']['allowpost']) || ($_G['forum']['postperm'] && forumperm($_G['forum']['postperm'], $_G['perm']['groupid'])) || (isset($_G['forum']['allowpost']) && $_G['forum']['allowpost'] == 1 && $_G['perm']['allowpost']);
$guestfastpost = $guestfastpost && !$_G['forum']['allowspecialonly'];
$_G['perm']['allowpost'] = isset($_G['forum']['allowpost']) && $_G['forum']['allowpost'] == -1 ?  false : $_G['perm']['allowpost'];
}
$fastpost = $_G['setting']['fastpost'] && $_G['group']['allowpost'] && !$_G['forum']['allowspecialonly'] && !$_G['forum']['threadsorts']['required'];
$_G['group']['allowpost'] = (!$_G['forum']['postperm'] && $_G['group']['allowpost']) || ($_G['forum']['postperm'] && forumperm($_G['forum']['postperm'])) || (isset($_G['forum']['allowpost']) && $_G['forum']['allowpost'] == 1 && $_G['group']['allowpost']);
$fastpost = $fastpost && !$_G['forum']['allowspecialonly'];
$_G['group']['allowpost'] = isset($_G['forum']['allowpost']) && $_G['forum']['allowpost'] == -1 ?  false : $_G['group']['allowpost'];
$guestpost = null;
if(!$_G['uid']) {
$guestpost = $_G['perm']['allowpost'] && !$_G['group']['allowpost'];
if($guestpost) {
$_G['group']['allowpost'] = $_G['perm']['allowpost'];
}
$fastpost = $guestfastpost && !$fastpost || $fastpost;
}
if($fastpost) {
$usesigcheck = $_G['uid'] && $_G['group']['maxsigsize'];
$seccodecheck = ($_G['setting']['seccodestatus'] & 4) && (!$_G['setting']['seccodedata']['minposts'] || getuserprofile('posts') < $_G['setting']['seccodedata']['minposts']);
$secqaacheck = $_G['setting']['secqaa']['status'] & 2 && (!$_G['setting']['secqaa']['minposts'] || getuserprofile('posts') < $_G['setting']['secqaa']['minposts']);
}
//note 特殊类型主题过滤连接
$showpoll = $showtrade = $showreward = $showactivity = $showdebate = 0;
if($_G['forum']['allowpostspecial']) {
$showpoll = $_G['forum']['allowpostspecial'] & 1;
$showtrade = $_G['forum']['allowpostspecial'] & 2;
$showreward = isset($_G['setting']['extcredits'][$_G['setting']['creditstransextra'][2]]) && ($_G['forum']['allowpostspecial'] & 4);
$showactivity = $_G['forum']['allowpostspecial'] & 8;
$showdebate = $_G['forum']['allowpostspecial'] & 16;
}
//note 特殊类型主题发布按钮
if($_G['group']['allowpost']) {
$_G['group']['allowpostpoll'] = $_G['group']['allowpostpoll'] && $showpoll;
$_G['group']['allowposttrade'] = $_G['group']['allowposttrade'] && $showtrade;
$_G['group']['allowpostreward'] = $_G['group']['allowpostreward'] && $showreward;
$_G['group']['allowpostactivity'] = $_G['group']['allowpostactivity'] && $showactivity;
$_G['group']['allowpostdebate'] = $_G['group']['allowpostdebate'] && $showdebate;
}
$_G['forum']['threadplugin'] = $_G['group']['allowpost'] && $_G['setting']['threadplugins'] ? unserialize($_G['forum']['threadplugin']) : array();
if($_G['setting']['forumjump']) {
$forummenu = forumselect(FALSE, 1);
}
$template = 'diy:forum/forumdisplay:'.$_G['fid'];
if(!empty($_G['forum']['threadsorts']['templatelist']) && $_G['forum']['status'] != 3) {
$template = 'diy:forum/forumdisplay_'.$_G['forum']['threadsorts']['templatelist'].':'.$_G['fid'];
} elseif($_G['forum']['status'] == 3) {
$groupviewed_list = get_viewedgroup();
write_groupviewed($_G['fid']);
$template = 'diy:club/club:'.$_G['fid'];
}
if($_G['gp_archiver']) {
include loadarchiver('forum/forumdisplay');
exit();
}
include template($template);
?>

对于入门比较浅的人，应该还是有点用的。