Discuz!常用函数解析

Discuz!常用函数解析
php, 函数, Discuz, param, Discuz二次开发
<?php
/*
[Discuz!] (C)2001-2007 Comsenz Inc.
This is NOT a freeware, use is subject to license terms
$Id: global.func.php 13426 2008-04-15 03:37:02Z heyond $
*/
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
/**
* 加密或者解密用户信息
* @param $string - 加密或解密的串
* @param $operation - 加密还是解密
* @param 密钥
* @return 返回字符串
* $ckey_length 随机密钥长度取值 0-32;
* 加入随机密钥，可以令密文无任何规律，即便是原文和密钥完全相同，加密结果也会每次不同，增大破解难度。

* 取值越大，密文变动规律越大，密文变化 = 16 的 $ckey_length 次方
* 当此值为 0 时，则不产生随机密钥
*/
function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
$ckey_length = 4;
$key = md5($key ? $key : $GLOBALS['discuz_auth_key']);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);
$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() :
0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}
if($operation == 'DECODE') {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '',
base64_encode($result));
}
}
/**
* 清理cookie
*/
function clearcookies() {
global $discuz_uid, $discuz_user, $discuz_pw, $discuz_secques, $adminid, $credits;
dsetcookie('sid', '', -86400 * 365);
dsetcookie('auth', '', -86400 * 365);
dsetcookie('visitedfid', '', -86400 * 365);
dsetcookie('onlinedetail', '', -86400 * 365, 0);
dsetcookie('loginuser', '', -86400 * 365);
dsetcookie('activationauth', '', -86400 * 365);
$discuz_uid = $adminid = $credits = 0;
$discuz_user = $discuz_pw = $discuz_secques = '';
}
/**
* 检查积分下限
* @param $creditsarray - 积分数组
* @param $coef - 积分
*/
function checklowerlimit($creditsarray, $coef = 1) {
if(is_array($creditsarray)) {
global $extcredits, $id;
foreach($creditsarray as $id => $addcredits) {
$addcredits = $addcredits * $coef;
if($addcredits < 0 &&
($GLOBALS['extcredits'.$id] < $extcredits[$id]['lowerlimit'] || (($GLOBALS['extcredits'.$id] + $addcredits) <
$extcredits[$id]['lowerlimit']))) {
if($coef == 1) {
showmessage('credits_policy_l owerlimit');
} else {
showmessage('credits_policy_n um_lowerlimit');
}
}
}
}
}
/**
* 密码检测
*
* @param string $md5
* @param string $verified
* @param string $salt
* @return
* 0= Failed
* 1= MD5 with salt, 2= Dual MD5, 3= Normal Md5 4= MD5-16
*/
function checkmd5($md5, $verified, $salt = '') {
if(md5($md5.$salt) == $verified) {
$result = !empty($salt) ? 1 : 2;
} elseif(empty($salt)) {
$result = $md5 == $verified ? 3 : ((strlen($verified) == 16 && substr($md5, 8, 16) == $verified) ? 4 : 0);
} else {
$result = 0;
}
return $result;
}
/**
* 检查模板源文件是否更新
* 当编译文件不存时强制重新编译
* 当 tplrefresh = 1 时检查文件
* 当 tplrefresh > 1 时，则根据 tplrefresh 取余，无余时则检查更新
*
*/
function checktplrefresh($maintpl, $subtpl, $timecompare, $templateid, $tpldir) {
global $tplrefresh;
if(empty($timecompare) || $tplrefresh == 1 || ($tplrefresh > 1 && !($GLOBALS['timestamp'] % $tplrefresh))) {
if(empty($timecompare) || @filemtime($subtpl) > $timecompare) {
require_once
DISCUZ_ROOT.'./include/template.func.php';
parse_template($maintpl, $templateid, $tpldir); return TRUE;
}
}
return FALSE;
}
/**
* 根据中文裁减字符串
* @param $string - 字符串
* @param $length - 长度
* @param $doc - 缩略后缀
* @return 返回带省略号被裁减好的字符串
*/
function cutstr($string, $length, $dot = ' ...') {
global $charset;
if(strlen($string) <= $length) {
return $string;
}
$string = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string);
$strcut = '';
if(strtolower($charset) == 'utf-8') {
$n = $tn = $noc = 0;
while($n < strlen($string)) {
$t = ord($string[$n]);
if($t == 9 || $t == 10 || (32 <= $t && $t <= 126))
{
$tn = 1; $n++; $noc++;
} elseif(194 <= $t && $t <= 223) {
$tn = 2; $n += 2; $noc += 2;
} elseif(224 <= $t && $t < 239) {
$tn = 3; $n += 3; $noc += 2;
} elseif(240 <= $t && $t <= 247) {
$tn = 4; $n += 4; $noc += 2;
} elseif(248 <= $t && $t <= 251) {
$tn = 5; $n += 5; $noc += 2;
} elseif($t == 252 || $t == 253) {
$tn = 6; $n += 6; $noc += 2;
} else {
$n++;
}
if($noc >= $length) {
break;
}
}
if($noc > $length) {
$n -= $tn;
}
$strcut = substr($string, 0, $n);
} else {
for($i = 0; $i < $length; $i++) {
$strcut .= ord($string[$i]) > 127 ?
$string[$i].$string[++$i] : $string[$i];
}
}
$strcut = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $strcut);
return $strcut.$dot;
}
/**
* 处理转义字符
* @param $string -字符串
* @param $force - 是否强制
* @return 返回整理好的字符串
*/
function daddslashes($string, $force = 0) {
!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());
if(!MAGIC_QUOTES_GPC || $force) {
if(is_array($string)) {
foreach($string as $key => $val) {
$string[$key] = daddslashes($val, $force);
}
} else {
$string = addslashes($string);
}
}
return $string;
}
/**
* 检测日期的有效性
*/
function datecheck($ymd, $sep='-') {
if(!empty($ymd)) {
list($year, $month, $day) = explode($sep, $ymd);
return checkdate($month, $day, $year);
} else {
return FALSE;
}
}
/**
* 调试信息
*/
function debuginfo() {
if($GLOBALS['debug']) {
global $db, $discuz_starttime, $debuginfo;
$mtime = explode(' ', microtime());
$debuginfo = array('time' => number_format(($mtime[1] + $mtime[0] - $discuz_starttime), 6), 'queries' => $db->querynum);
return TRUE;
} else {
return FALSE;
}
}
/**
* 退出系统
*/
function dexit($message = '') {
echo $message;
output();
exit();
}
function dfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE, $ip = '', $timeout = 15, $block = TRUE) {
$return = '';
$matches = parse_url($url);
$host = $matches['host'];
$path = $matches['path'] ?
$matches['path'].'?'.$matches['query'].'#'.$matches['fragment'] : '/'; $port = !empty($matches['port']) ? $matches['port'] : 80;
if($post) {
$out = "POST $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$out .= "Content-Type:
application/x-www-form-urlencoded\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n"; $out .= "Host: $host\r\n";
$out .= 'Content-Length: '.strlen($post)."\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cache-Control: no-cache\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
$out .= $post;
} else {
$out = "GET $path HTTP/1.0\r\n";
$out .= "Accept: */*\r\n";
//$out .= "Referer: $boardurl\r\n";
$out .= "Accept-Language: zh-cn\r\n";
$out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n"; $out .= "Host: $host\r\n";
$out .= "Connection: Close\r\n";
$out .= "Cookie: $cookie\r\n\r\n";
}
$fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
if(!$fp) {
return '';//note $errstr : $errno \r\n
} else {
stream_set_blocking($fp, $block);
stream_set_timeout($fp, $timeout);
@fwrite($fp, $out);
$status = stream_get_meta_data($fp);
if(!$status['timed_out']) {
while (!feof($fp)) {
if(($header = @fgets($fp)) && ($header
== "\r\n" || $header == "\n")) {
break;
}
}
$stop = false;
while(!feof($fp) && !$stop) {
$data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
$return .= $data;
if($limit) {
$limit -= strlen($data);
$stop = $limit <= 0;
}
}
}
@fclose($fp);
return $return;
}
}
/**
* HTML转义字符
* @param $string - 字符串
* @return 返回转义好的字符串
*/
function dhtmlspecialchars($string) {
if(is_array($string)) {
foreach($string as $key => $val) {
$string[$key] = dhtmlspecialchars($val);
}
} else {
$string =
preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4})|[a-zA-Z][a-z0-9]{2,5});) /', '&\\1',
str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string));
}
return $string;
}
function dheader($string, $replace = true, $http_response_code = 0) { $string = str_replace(array("\r", "\n"), array('', ''), $string); if(empty($http_response_code) || PHP_VERSION < '4.3' ) {
@header($string, $replace);
} else {
@header($string, $replace, $http_response_code);
}
if(preg_match('/^\s*location:/is', $string)) {
exit();
}
}
/**
* 上传文件的函数
* @param $file - 要上传的文件
* @return 返回带省略号被裁减好的字符串
*/
function disuploadedfile($file) {
return function_exists('is_uploaded_file') &&
(is_uploaded_file($file) || is_uploaded_file(str_replace('\\\\', '\\', $file)));
}
/**
* 刷新重定向
*/
function dreferer($default = '') {
global $referer, $indexname;
$default = empty($default) ? $indexname : '';
if(empty($referer) &&
isset($GLOBALS['_SERVER']['HTTP_REFERER'])) {
$referer =
preg_replace("/([\?&])((sid\=[a-z0-9]{6})(&|$))/i", '\\1', $GLOBALS['_SERVER']['HTTP_REFERER']);
$referer = substr($referer, -1) == '?' ? substr($referer, 0, -1) : $referer;
} else {
$referer = dhtmlspecialchars($referer);
}
if(!preg_match("/(\.php|[a-z]+(\-\d+)+\.html)/", $referer) || strpos($referer, 'logging.php')) {
$referer = $default;
}
return $referer;
}
/**
* 设置cookie
* @param $var - 变量名
* @param $value - 变量值
* @param $life - 生命期
* @param $prefix - 前缀
*/
function dsetcookie($var, $value, $life = 0, $prefix = 1) {
global $cookiepre, $cookiedomain, $cookiepath, $timestamp, $_SERVER;
setcookie(($prefix ? $cookiepre : '').$var, $value,
$life ? $timestamp + $life : 0, $cookiepath,
$cookiedomain, $_SERVER['SERVER_PORT'] == 443 ? 1 : 0); }
function dunlink($filename, $havethumb = 0, $remote = 0) {
global $authkey, $ftp, $attachdir;
if($remote) {
require_once DISCUZ_ROOT.'./include/ftp.func.php';
if(!$ftp['connid']) {
if(!($ftp['connid'] =
dftp_connect($ftp['host'], $ftp['username'], authcode($ftp['password'], 'DECODE', md5($authkey)), $ftp['attachdir'], $ftp['port'],
$ftp['ssl']))) {
return;
}
}
dftp_delete($ftp['connid'], $filename);
$havethumb && dftp_delete($ftp['connid'],
$filename.'.thumb.jpg');
} else {
@unlink($attachdir.'/'.$filename);
$havethumb &&
@unlink($attachdir.'/'.$filename.'.thumb.jpg');
}
}
/**
* 格式化email
* @param $email - 邮箱地址
* @param $tolink - 是否增加链接
* @return 返回代码
*/
function emailconv($email, $tolink = 1) {
$email = str_replace(array('@', '.'), array('@', '.'), $email); return $tolink ? '<a href="mailto: '.$email.'">'.$email.'</a>': $email;
}
/**
* 系统错误日志
* @param $type - 信息类型
* @param $message - 信息
* @param $halt - 是否退出
*/
function errorlog($type, $message, $halt = 1) {
global $timestamp, $discuz_userss, $onlineip, $_SERVER;
$user = empty($discuz_userss) ? '' : $discuz_userss.'<br />'; $user .= $onlineip.'|'.$_SERVER['REMOTE_ADDR'];
writelog('errorlog',
dhtmlspecialchars("$timestamp\t$type\t$user\t".str_replace(array("\r", "\n"), array(' ', ' '), trim($message))));
if($halt) {
exit();
}
}
/**
* 去掉文件扩展名
* @param $finename - 文件名称
* @return 文件名
*/
function fileext($filename) {
return trim(substr(strrchr($filename, '.'), 1, 10));
}
/**
* 产生form防伪码
*/
function formhash($specialadd = '') {
global $discuz_user, $discuz_uid, $discuz_pw, $timestamp, $discuz_auth_key;
$hashadd = defined('IN_ADMINCP') ? 'Only For Discuz! Admin Control Panel' : '';
return substr(md5(substr($timestamp, 0,
-7).$discuz_user.$discuz_uid.$discuz_pw.$discuz_auth_key.$hashadd.$sp ecialadd), 8, 8);
}
/**
* 论坛权限
* @param $permstr - 权限信息
* @return 0 无权限 > 0 有权限
*/
function forumperm($permstr) {
global $groupid, $extgroupids;
$groupidarray = array($groupid);
foreach(explode("\t", $extgroupids) as $extgroupid) {
if($extgroupid = intval(trim($extgroupid))) {
$groupidarray[] = $extgroupid;
}
}
return preg_match("/(^|\t)(".implode('|', $groupidarray).")(\t|$)/", $permstr);
}
/**
权限表达式
* @param $formula - 权限表达式
* @param $type - 0 论坛权限验证 1 勋章权限验证 2 返回勋章权限字串
*/
function formulaperm($formula, $type = 0) {
global $_DSESSION, $extcredits, $formulamessage, $usermsg, $forum, $language;
if((!$formula || $_DSESSION['adminid'] == 1 ||
$forum['ismoderator']) && !$type) {
return;
}
$formula = unserialize($formula);$formula = $formula[1];
if(!$formula) {
return;
}
@eval("\$formulaperm = ($formula) ? TRUE : FALSE;");
if(!$formulaperm || $type == 2) {
include_once language('misc');
$search = array('$_DSESSION[\'digestposts\']',
'$_DSESSION[\'posts\']', '$_DSESSION[\'oltime\']',
'$_DSESSION[\'pageviews\']');
$replace = array($language['formulaperm_digestposts'], $language['formulaperm_posts'], $language['formulaperm_oltime'], $language['formulaperm_pageviews']);
for($i = 1; $i <= 8; $i++) {
$search[] = '$_DSESSION[\'extcredits'.$i.'\']'; $replace[] = $extcredits[$i]['title'] ? $extcredits[$i]['title'] : $language['formulaperm_extcredits'].$i;
}
$i = 0;$usermsg = '';
foreach($search as $s) {
$usermsg .= strexists($formula, $s) ? $replace[$i].' = '.(@eval('return intval('.$s.');')).' ' : '';
$i++;
}
$search = array_merge($search, array('and', 'or', '>=', '<='));
$replace = array_merge($replace,
array(' '.$language['formulaperm_and'].' ',
' '.$language['formulaperm_or'].' ', '≥', '≤'));
$formulamessage = str_replace($search, $replace, $formula);
if($type == 1) {
showmessage('medal_permforum_nopermission', NULL, 'NOPERM');
} elseif($type == 2) {
return $formulamessage;
} else {
showmessage('forum_permforum_nopermission', NULL, 'NOPERM');
}
}
return TRUE;
}
/**
* 获取用户所在组
* @param $uid - 用户组
* @param $group - 用户组
* @param $member - 用户组
*/
function getgroupid($uid, $group, &$member) {
global $creditsformula, $db, $tablepre;
if(!empty($creditsformula)) {
$updatearray = array();
eval("\$credits = round($creditsformula);");
if($credits != $member['credits']) {
$updatearray[] = "credits='$credits'";
$member['credits'] = $credits;
}
if($group['type'] == 'member'
&& !($member['credits'] >= $group['creditshigher'] && $member['credits'] < $group['creditslower'])) {
$query = $db->query("SELECT groupid FROM {$tablepre}usergroups WHERE type='member' AND
$member[credits]>=creditshigher AND $member[credits]<creditslower LIMIT 1");
if($db->num_rows($query)) {
$member['groupid'] =
$db->result($query, 0);
$updatearray[] =
"groupid='$member[groupid]'";
}
}
if($updatearray) {
$db->query("UPDATE {$tablepre}members SET
".implode(', ', $updatearray)." WHERE uid='$uid'");
}
}
return $member['groupid'];
}
function getrobot() {
if(!defined('IS_ROBOT')) {
$kw_spiders =
'Bot|Crawl|Spider|slurp|sohu-search|lycos|robozilla';
$kw_browsers = 'MSIE|Netscape|Opera|Konqueror|Mozilla'; if(preg_match("/($kw_browsers)/",
$_SERVER['HTTP_USER_AGENT'])) {
define('IS_ROBOT', FALSE);
} elseif(preg_match("/($kw_spiders)/",
$_SERVER['HTTP_USER_AGENT'])) {
define('IS_ROBOT', TRUE);
} else {
define('IS_ROBOT', FALSE);
}
}
return IS_ROBOT;
}
/**
* 根据用户的 uid 得到 avatar/home 目录
*
* @param int $uid
* @return string
*/
function get_home($uid) {
$uid = sprintf("%05d", $uid);
$dir1 = substr($uid, 0, -4);
$dir2 = substr($uid, -4, 2);
$dir3 = substr($uid, -2, 2);
return $dir1.'/'.$dir2.'/'.$dir3;
}
/**
* vip用户购买组权限是否到期
* @param $terms 期限来源于 memberfields 表的 groupterms 字段
* @return 返回过期信息
*/
function groupexpiry($terms) {
$terms = is_array($terms) ? $terms : unserialize($terms);
$groupexpiry = isset($terms['main']['time']) ?
intval($terms['main']['time']) : 0;
if(is_array($terms['ext'])) {
foreach($terms['ext'] as $expiry) {
if((!$groupexpiry && $expiry) || $expiry < $groupexpiry) {
$groupexpiry = $expiry;
}
}
}
return $groupexpiry;
}
/**
* ip允许访问
* @param $ip 要检查的ip地址
* @param - $accesslist 允许访问的ip地址
* @param 返回结果
*/
function ipaccess($ip, $accesslist) {
return preg_match("/^(".str_replace(array("\r\n", ' '),
array('|', ''), preg_quote($accesslist, '/')).")/", $ip);
}
/**
* 将数组元素格式化成类似 '1','2','3' 的字符串
* @return STRING 字串否则为 NULL
*/
function implodeids($array) {
if(!empty($array)) {
return "'".implode("','", is_array($array) ? $array : array($array))."'";
} else {
return '';
}
}
/**
* ip限制访问
* @param $ip 要检查的ip地址
* @param - $accesslist 允许访问的ip地址
* @param 返回结果
*/
function ipbanned($onlineip) {
global $ipaccess, $timestamp, $cachelost;
if($ipaccess && !ipaccess($onlineip, $ipaccess)) {
return TRUE;
}
$cachelost .= (@include
DISCUZ_ROOT.'./forumdata/cache/cache_ipbanned.php') ? '' : ' ipbanned'; if(empty($_DCACHE['ipbanned'])) {
return FALSE;
} else {
if($_DCACHE['ipbanned']['expiration'] < $timestamp) { @unlink(DISCUZ_ROOT.'./forumdata/cache/cache_ ipbanned.php');
}
return
preg_match("/^(".$_DCACHE['ipbanned']['regexp'].")$/", $onlineip);
}
}
/**
* 检查邮箱是否有效
* @param $email 要检查的邮箱
* @param 返回结果
*/
function isemail($email) {
return strlen($email) > 6 &&
preg_match("/^[\w\-\.]+@[\w\-\.]+(\.\w+)+$/", $email);
}
/**
* 加载语言
* @param $file - 语言文件
* @param $templateid - 模板号码
* @param $tpldir - 模板路径
* @return 加载的语言
*/
function language($file, $templateid = 0, $tpldir = '') {
$tpldir = $tpldir ? $tpldir : TPLDIR;
$templateid = $templateid ? $templateid : TEMPLATEID;
$languagepack = DISCUZ_ROOT.'./'.$tpldir.'/'.$file.'.lang.php'; if(file_exists($languagepack)) {
return $languagepack;
} elseif($templateid != 1 && $tpldir != './templates/default') {
return language($file, 1, './templates/default');
} else {
return FALSE;
}
}
/**
* 分页
* @param $num - 总数
* @param $perpage - 每页数
* @param $curpage - 当前页
* @param $mpurl - 跳转的路径
* @param $maxpages - 允许显示的最大页数
* @param $page - 最多显示多少页码
* @param $autogoto - 最后一页，自动跳转
* @param $simple - 是否简洁模式（简洁模式不显示上一页、下一页和页码跳转）
* @return 返回分页代码
*/
function multi($num, $perpage, $curpage, $mpurl, $maxpages = 0, $page = 10, $autogoto = TRUE, $simple = FALSE) {
global $maxpage;
//debug 加入 ajaxtarget 属性
$ajaxtarget = !empty($_GET['ajaxtarget']) ? "
ajaxtarget=\"".dhtmlspecialchars($_GET['ajaxtarget'])."\" " : '';
$multipage = '';
$mpurl .= strpos($mpurl, '?') ? '&' : '?';
$realpages = 1;
if($num > $perpage) {
$offset = 2;
$realpages = @ceil($num / $perpage);
$pages = $maxpages && $maxpages < $realpages ? $maxpages : $realpages;
if($page > $pages) {
$from = 1;
$to = $pages;
} else {
$from = $curpage - $offset;
$to = $from + $page - 1;
if($from < 1) {
$to = $curpage + 1 - $from;
$from = 1;
if($to - $from < $page) {
$to = $page;
}
} elseif($to > $pages) {
$from = $pages - $page + 1;
$to = $pages;
}
}
$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.'page=1" class="first"'.$ajaxtarget.'>1 ...</a>' : '').
($curpage > 1 && !$simple ? '<a
href="'.$mpurl.'page='.($curpage - 1).'"
class="prev"'.$ajaxtarget.'>‹‹</a>' : '');
for($i = $from; $i <= $to; $i++) {
$multipage .= $i == $curpage ?
'<strong>'.$i.'</strong>' :
'<a
href="'.$mpurl.'page='.$i.($ajaxtarget && $i == $pages && $autogoto ? '#' : '').'"'.$ajaxtarget.'>'.$i.'</a>';
}
$multipage .= ($curpage < $pages && !$simple ? '<a href="'.$mpurl.'page='.($curpage + 1).'"
class="next"'.$ajaxtarget.'>››</a>' : '').
($to < $pages ? '<a
href="'.$mpurl.'page='.$pages.'" class="last"'.$ajaxtarget.'>...
'.$realpages.'</a>' : '').
(!$simple && $pages > $page && !$ajaxtarget ? '<kbd><input type="text" name="custompage" size="3" /></kbd>' : ''); $multipage = $multipage ? '<div
class="pages">'.(!$simple ? '<em> '.$num.' </em>' :
'').$multipage.'</div>' : '';
}
$maxpage = $realpages;
return $multipage;
}
/**
* 系统输出
* @return 返回内容
*/
function output() {
if(defined('DISCUZ_OUTPUTED')) {
return;
}
define('DISCUZ_OUTPUTED', 1);
global $sid, $transsidstatus, $rewritestatus, $ftp, $advlist, $insenz, $queryfloat, $thread, $inajax;
if(($advlist || !empty($insenz['hardadstatus']) || $queryfloat) && !defined('IN_ADMINCP') && !(CURSCRIPT == 'viewthread' &&
$thread['digest'] == '-1') && !$inajax) {
include template('adv');
}
if(($transsidstatus = empty($GLOBALS['_DCOOKIE']['sid']) && $transsidstatus) || $rewritestatus) {
if($transsidstatus) {
$searcharray = array
(
"/\<a(\s*[^\>]+\s*)href\=([\"|\']?)([
^\"\'\s]+)/ies",
"/(\<form.+?\>)/is"
);
$replacearray = array
(
"transsid('\\3','<a\\1href=\\2')",
"\\1\n<input type=\"hidden\"
name=\"sid\" value=\"$sid\" />"
);
} else {
$searcharray = $replacearray = array();
if($rewritestatus & 1) {
$searcharray[] = "/\<a
href\=\"forumdisplay\.php\?fid\=(\d+)(&page\=(\d+))?\"([^\>]*)\>/e";
$replacearray[] = "rewrite_forum('\\1', '\\3', '\\4')";
}
if($rewritestatus & 2) {
$searcharray[] = "/\<a
href\=\"viewthread\.php\?tid\=(\d+)(&extra\=page\%3D(\d+))?(&page\=(\
d+))?\"([^\>]*)\>/e";
$replacearray[] =
"rewrite_thread('\\1', '\\5', '\\3', '\\6')";
}
if($rewritestatus & 4) {
$searcharray[] = "/\<a
href\=\"space\.php\?(uid\=(\d+)|username\=([^&]+?))\"([^\>]*)\>/e";
$replacearray[] = "rewrite_space('\\2', '\\3', '\\4')";
}
if($rewritestatus & 8) {
$searcharray[] = "/\<a
href\=\"tag\.php\?name\=([^&]+?)\"([^\>]*)\>/e";
$replacearray[] = "rewrite_tag('\\1', '\\2')";
}
}
$content = preg_replace($searcharray, $replacearray, ob_get_contents());
ob_end_clean();
$GLOBALS['gzipcompress'] ? ob_start('ob_gzhandler') : ob_start();
echo $content;
}
if($ftp['connid']) {
@ftp_close($ftp['connid']);
}
$ftp = array();
//debug Module:HTML_CACHE 如果定义了缓存常量，则此处将缓冲区的内容写入文件。

如果为 index 缓存，则直接写入 forumdata/index.cache ，如果为 viewthread 缓存，则根据md5(tid,等参数)取前三位为目录加上
$tid_$page，做文件名。

//debug $threadcacheinfo, $indexcachefile 为全局变量
if(defined('CACHE_FILE') && CACHE_FILE
&& !defined('CACHE_FORBIDDEN')) {
global $cachethreaddir;
if(diskfreespace(DISCUZ_ROOT.'./'.$cachethreaddir) > 1000000) {
if($fp = @fopen(CACHE_FILE, 'w')) {
flock($fp, LOCK_EX);
fwrite($fp, empty($content) ?
ob_get_contents() : $content);
}
@fclose($fp);
chmod(CACHE_FILE, 0777);
}
}
}
/**
* 时间段设置检测
* @param $periods - 那种时间段
$settings[$periods] $settings['postbanperiods']
$settings['postmodperiods']
* @param $showmessage - 是否提示信息
* @return 返回检查结果
*/
function periodscheck($periods, $showmessage = 1) {
global $timestamp, $disableperiodctrl, $_DCACHE, $banperiods;。