【discuzX2】/source/function/function_core.php通用核心函数库文件分析

发布时间：2023-09-06 01:09责任编辑：傅花花关键词：暂无标签

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<?php
/**
*[Discuz!](C)2001-2099ComsenzInc.
*ThisisNOTafreeware,useissubjecttolicenseterms
*
*$Id:function_core.php288902012-03-1902:05:42Zliudongdong$
*/
if(!defined(‘IN_DISCUZ‘)){
exit(‘AccessDenied‘);
}
//通用函数集合
define(‘DISCUZ_CORE_FUNCTION‘,true);
/**
*系统错误处理
*@param<type>$message错误信息
*@param<type>$show是否显示信息
*@param<type>$save是否存入日志
*@param<type>$halt是否中断访问
*/
functionsystem_error($message,$show=true,$save=true,$halt=true){
require_oncelibfile(‘class/error‘);
discuz_error::system_error($message,$show,$save,$halt);
}
/**
*更新session
*@global<type>$_G
*@staticvarboolean$updated
*@paramboolean$force
*@returnboolean
*/
functionupdatesession($force=false){
global$_G;
static$updated=false;
if(!$updated){
if($_G[‘uid‘]){
if($_G[‘cookie‘][‘ulastactivity‘]){
$ulastactivity=authcode($_G[‘cookie‘][‘ulastactivity‘],‘DECODE‘);
}else{
$ulastactivity=getuserprofile(‘lastactivity‘);
dsetcookie(‘ulastactivity‘,authcode($ulastactivity,‘ENCODE‘),31536000);
}
}
$discuz=&discuz_core::instance();
//note更新在线时间
$oltimespan=$_G[‘setting‘][‘oltimespan‘];
$lastolupdate=$discuz->session->var[‘lastolupdate‘];
if($_G[‘uid‘]&&$oltimespan&&TIMESTAMP-($lastolupdate?$lastolupdate:$ulastactivity)>$oltimespan*60){
DB::query("UPDATE".DB::table(‘common_onlinetime‘)."
SETtotal=total+‘$oltimespan‘,thismonth=thismonth+‘$oltimespan‘,lastupdate=‘".TIMESTAMP."‘
WHEREuid=‘{$_G[‘uid‘]}‘");
if(!DB::affected_rows()){
DB::insert(‘common_onlinetime‘,array(
‘uid‘=>$_G[‘uid‘],
‘thismonth‘=>$oltimespan,
‘total‘=>$oltimespan,
‘lastupdate‘=>TIMESTAMP,
));
}
$discuz->session->set(‘lastolupdate‘,TIMESTAMP);
}
foreach($discuz->session->varas$k=>$v){
if(isset($_G[‘member‘][$k])&&$k!=‘lastactivity‘){
$discuz->session->set($k,$_G[‘member‘][$k]);
}
}
foreach($_G[‘action‘]as$k=>$v){
$discuz->session->set($k,$v);
}
$discuz->session->update();
$updated=true;
if($_G[‘uid‘]&&TIMESTAMP-$ulastactivity>21600){
if($oltimespan&&TIMESTAMP-$ulastactivity>43200){
$total=DB::result_first("SELECTtotalFROM".DB::table(‘common_onlinetime‘)."WHEREuid=‘$_G[uid]‘");
DB::update(‘common_member_count‘,array(‘oltime‘=>round(intval($total)/60)),"uid=‘$_G[uid]‘",1);
}
dsetcookie(‘ulastactivity‘,authcode(TIMESTAMP,‘ENCODE‘),31536000);
DB::update(‘common_member_status‘,array(‘lastip‘=>$_G[‘clientip‘],‘lastactivity‘=>TIMESTAMP,‘lastvisit‘=>TIMESTAMP),"uid=‘$_G[uid]‘",1);
}
}
return$updated;
}
/**
*获取microtimefloat数值,为了兼容php4
*@return<float>
*/
functiondmicrotime(){
returnarray_sum(explode(‘‘,microtime()));
}
/**
*设置全局$_G中的变量
*@global<array>$_G
*@param<string>$key键
*@param<string>$value值
*@param<mix>$group组(准备废弃,尽量不用)
*@returntrue
*
*@example
*setglobal(‘test‘,1);//$_G[‘test‘]=1;
*setglobal(‘config/test/abc‘)=2;//$_G[‘config‘][‘test‘][‘abc‘]=2;
*
*/
functionsetglobal($key,$value,$group=null){
global$_G;
$k=explode(‘/‘,$group===null?$key:$group.‘/‘.$key);
switch(count($k)){
case1:$_G[$k[0]]=$value;break;
case2:$_G[$k[0]][$k[1]]=$value;break;
case3:$_G[$k[0]][$k[1]][$k[2]]=$value;break;
case4:$_G[$k[0]][$k[1]][$k[2]][$k[3]]=$value;break;
case5:$_G[$k[0]][$k[1]][$k[2]][$k[3]][$k[4]]=$value;break;
}
returntrue;
}
/**
*获取全局变量$_G当中的某个数值
*@global$_G
*@param<type>$key
*@param<type>$group计划废弃的参数,不建议使用
*@return<mix>
*
*$v=getglobal(‘test‘);//$v=$_G[‘test‘]
*$v=getglobal(‘test/hello/ok‘);//$v=$_G[‘test‘][‘hello‘][‘ok‘]
*/
functiongetglobal($key,$group=null){
global$_G;
$k=explode(‘/‘,$group===null?$key:$group.‘/‘.$key);
switch(count($k)){
case1:returnisset($_G[$k[0]])?$_G[$k[0]]:null;break;
case2:returnisset($_G[$k[0]][$k[1]])?$_G[$k[0]][$k[1]]:null;break;
case3:returnisset($_G[$k[0]][$k[1]][$k[2]])?$_G[$k[0]][$k[1]][$k[2]]:null;break;
case4:returnisset($_G[$k[0]][$k[1]][$k[2]][$k[3]])?$_G[$k[0]][$k[1]][$k[2]][$k[3]]:null;break;
case5:returnisset($_G[$k[0]][$k[1]][$k[2]][$k[3]][$k[4]])?$_G[$k[0]][$k[1]][$k[2]][$k[3]][$k[4]]:null;break;
}
returnnull;
}
/**
*取出get,post,cookie当中的某个变量
*
*@paramstring$kkey值
*@paramstring$type类型
*@returnmix
*/
functiongetgpc($k,$type=‘GP‘){
$type=strtoupper($type);
switch($type){
case‘G‘:$var=&$_GET;break;
case‘P‘:$var=&$_POST;break;
case‘C‘:$var=&$_COOKIE;break;
default:
if(isset($_GET[$k])){
$var=&$_GET;
}else{
$var=&$_POST;
}
break;
}
returnisset($var[$k])?$var[$k]:NULL;
}
/**
*根据uid获取用户基本数据
*@staticvararray$users存放已经获取的用户的信息,避免重复查库
*@param<int>$uid
*@return<array>
*/
functiongetuserbyuid($uid){
static$users=array();
if(empty($users[$uid])){
$users[$uid]=DB::fetch_first("SELECT*FROM".DB::table(‘common_member‘)."WHEREuid=‘$uid‘");
}
return$users[$uid];
}
/**
*获取当前用户的扩展资料
*@param$field字段
*/
functiongetuserprofile($field){
global$_G;
if(isset($_G[‘member‘][$field])){
return$_G[‘member‘][$field];
}
static$tablefields=array(
‘count‘=>array(‘extcredits1‘,‘extcredits2‘,‘extcredits3‘,‘extcredits4‘,‘extcredits5‘,‘extcredits6‘,‘extcredits7‘,‘extcredits8‘,‘friends‘,‘posts‘,‘threads‘,‘digestposts‘,‘doings‘,‘blogs‘,‘albums‘,‘sharings‘,‘attachsize‘,‘views‘,‘oltime‘,‘todayattachs‘,‘todayattachsize‘),
‘status‘=>array(‘regip‘,‘lastip‘,‘lastvisit‘,‘lastactivity‘,‘lastpost‘,‘lastsendmail‘,‘invisible‘,‘buyercredit‘,‘sellercredit‘,‘favtimes‘,‘sharetimes‘,‘profileprogress‘),
‘field_forum‘=>array(‘publishfeed‘,‘customshow‘,‘customstatus‘,‘medals‘,‘sightml‘,‘groupterms‘,‘authstr‘,‘groups‘,‘attentiongroup‘),
‘field_home‘=>array(‘videophoto‘,‘spacename‘,‘spacedescription‘,‘domain‘,‘addsize‘,‘addfriend‘,‘menunum‘,‘theme‘,‘spacecss‘,‘blockposition‘,‘recentnote‘,‘spacenote‘,‘privacy‘,‘feedfriend‘,‘acceptemail‘,‘magicgift‘,‘stickblogs‘),
‘profile‘=>array(‘realname‘,‘gender‘,‘birthyear‘,‘birthmonth‘,‘birthday‘,‘constellation‘,‘zodiac‘,‘telephone‘,‘mobile‘,‘idcardtype‘,‘idcard‘,‘address‘,‘zipcode‘,‘nationality‘,‘birthprovince‘,‘birthcity‘,‘resideprovince‘,‘residecity‘,‘residedist‘,‘residecommunity‘,‘residesuite‘,‘graduateschool‘,‘company‘,‘education‘,‘occupation‘,‘position‘,‘revenue‘,‘affectivestatus‘,‘lookingfor‘,‘bloodtype‘,‘height‘,‘weight‘,‘alipay‘,‘icq‘,‘qq‘,‘yahoo‘,‘msn‘,‘taobao‘,‘site‘,‘bio‘,‘interest‘,‘field1‘,‘field2‘,‘field3‘,‘field4‘,‘field5‘,‘field6‘,‘field7‘,‘field8‘),
‘verify‘=>array(‘verify1‘,‘verify2‘,‘verify3‘,‘verify4‘,‘verify5‘,‘verify6‘,‘verify7‘),
);
$profiletable=‘‘;
foreach($tablefieldsas$table=>$fields){
if(in_array($field,$fields)){
$profiletable=$table;
break;
}
}
if($profiletable){
$data=array();
if($_G[‘uid‘]){
$data=DB::fetch_first("SELECT".implode(‘,‘,$tablefields[$profiletable])."FROM".DB::table(‘common_member_‘.$profiletable)."WHEREuid=‘$_G[uid]‘");
}
if(!$data){
foreach($tablefields[$profiletable]as$k){
$data[$k]=‘‘;
}
}
$_G[‘member‘]=array_merge(is_array($_G[‘member‘])?$_G[‘member‘]:array(),$data);
return$_G[‘member‘][$field];
}
}
/**
*对字符串或者输入进行addslashes操作
*@param<mix>$string
*@param<int>$force
*@return<mix>
*/
functiondaddslashes($string,$force=1){
if(is_array($string)){
$keys=array_keys($string);
foreach($keysas$key){
$val=$string[$key];
unset($string[$key]);
$string[addslashes($key)]=daddslashes($val,$force);
}
}else{
$string=addslashes($string);
}
return$string;
}
/**
*对字符串进行加密和解密
*@param<string>$string
*@param<string>$operationDECODE解密|ENCODE加密
*@param<string>$key当为空的时候,取全局密钥
*@param<int>$expiry有效期,单位秒
*@return<string>
*/
functionauthcode($string,$operation=‘DECODE‘,$key=‘‘,$expiry=0){
$ckey_length=4;
$key=md5($key!=‘‘?$key:getglobal(‘authkey‘));
$keya=md5(substr($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)){
returnsubstr($result,26);
}else{
return‘‘;
}
}else{
return$keyc.str_replace(‘=‘,‘‘,base64_encode($result));
}
}
functionfsocketopen($hostname,$port=80,&$errno,&$errstr,$timeout=15){
$fp=‘‘;
if(function_exists(‘fsockopen‘)){
$fp=@fsockopen($hostname,$port,$errno,$errstr,$timeout);
}elseif(function_exists(‘pfsockopen‘)){
$fp=@pfsockopen($hostname,$port,$errno,$errstr,$timeout);
}elseif(function_exists(‘stream_socket_client‘)){
//notephp5支持
$fp=@stream_socket_client($hostname.‘:‘.$port,$errno,$errstr,$timeout);
}
return$fp;
}
/**
*远程文件文件请求兼容函数
*/
functiondfsockopen($url,$limit=0,$post=‘‘,$cookie=‘‘,$bysocket=FALSE,$ip=‘‘,$timeout=15,$block=TRUE){
require_oncelibfile(‘function/filesock‘);
return_dfsockopen($url,$limit,$post,$cookie,$bysocket,$ip,$timeout,$block);
}
/**
*HTML转义字符
*@param$string-字符串
*@return返回转义好的字符串
*/
functiondhtmlspecialchars($string){
if(is_array($string)){
foreach($stringas$key=>$val){
$string[$key]=dhtmlspecialchars($val);
}
}else{
$string=s

【discuzX2】/source/function/function_core.php通用核心函数库文件分析

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