Discuz X3.4 一些常用的接口/入口

昨天逛 Bilibili 想要看看有没有 Discuz 的后端 APi 或者一些接口发现了一个无脑的视频一共十多集全都是教人复制粘贴代码，还说程序员都是 Ctrl+c Ctrl+v 妈蛋看得我瞬间不舒服，意思说腾讯的代码都是复制粘贴来的？直接无语子?

我居然还看了 20 多分钟，就收获了一个小小的总结，希望他有点用处吧?

登陆

<a href="member.php?mod=logging&action=login" title="登录">登录</a>

<a href="member.php?mod=register" title="立即注册">立即注册</a>

用户组名称
```
$_G[group][grouptitle]
```
用户组ID
```
$_G[group][groupid]
```
总积分
```
$_G[member][credits]
```

忘记密码

<a href="javascript:;" title="找回密码">找回密码</a>

购买邀请码
```
misc.php?mod=buyinvitecode
```

JS跳转

onclick="window.location.href='home.php?mod=mobile&do=friend';"

JS更换class的名称

document.getElementById('idname').className='a';
  document.getElementById('idname').style.display='block';
  document.getElementById("idname").style.marginTop="30px";

批量替换超链接
```
href="[^"]*"
```

过滤DZ代码

preg_replace ("/\[[a-z][^\]]*\]|\[\/[a-z]+\]/i",'',preg_replace("/\[attach\]\d+\[\/attach\]/i",'',$message));

调用单个数据

$a = DB::result(DB::query("SELECT qi FROM ".DB::table('abc')." WHERE id = '1'"));

调用统计数据

$a = DB::result(DB::query("SELECT count(*) FROM ".DB::table('abc')." WHERE id = '1'"));

单数据表调用

$perpage = 20;
  $curpage = empty ( $_GET['page'] ) ? 1 : intval ( $_GET['page'] );
  $start = ($curpage-1)*$perpage;
  $askcount = DB::result(DB::query("SELECT COUNT(*) FROM ".DB::table('forum_thread')." WHERE fid = '2' AND authorid > 1"));
  //$asklist
  $asklist = array();
  if ($askcount) {
          $query = DB::query("SELECT * FROM ".DB::table('forum_thread')." WHERE fid = '2' AND displayorder > -1 ORDER BY tid ASC LIMIT $start,$perpage");
          while ($value = DB::fetch($query)) {
                  $asklist[] = $value;
          }
  }
  $multi = multi($askcount, $perpage, $curpage, "这里填写跳转地址");

多数据表调用

$perpage = 40;
  $curpage = empty ( $_GET['page'] ) ? 1 : intval ( $_GET['page'] );
  $start = ($curpage-1)*$perpage;
  $acount = DB::result(DB::query("SELECT count(*) FROM ".DB::table('forum_forum')." b LEFT JOIN ".DB::table('forum_forumfield')." bf ON bf.fid=b.fid WHERE b.type='sub' AND b.status = 3 AND bf.icon != ''"));
  //$alist
  $alist = array();
  if ($acount) {
          $query = DB::query("SELECT bf.*, b.* FROM ".DB::table('forum_forum')." b LEFT JOIN ".DB::table('forum_forumfield')." bf ON bf.fid=b.fid WHERE b.type='sub' AND b.status = 3 AND bf.icon != '' ORDER BY bf.shoplevel DESC, b.commoncredits DESC, bf.fid DESC LIMIT $start,$perpage");
          while ($value = DB::fetch($query)) {
                  $alist[] = $value;
          }
  }
  $multi = multi($acount, $perpage, $curpage, "这里填写跳转地址");

前台数据显示

<!--{loop $alist $key $value}-->
  <!--{eval $tupianfm = DB::result(DB::query("SELECT attachment FROM ".DB::table('forum_threadimage')." WHERE tid = '$value[tid]'"));}-->
  <img src="$tupianfm"><br>$value[authorid]
  <!--{/loop}-->

取数据表中符合条件的第一条数据

$app=array();
  $app=DB::fetch_first("select * from ".DB::table('abc')." where id='{$id}'");

人性化时间戳

<!--{echo dgmdate(这里填写时间参数, 'u', '9999', getglobal('setting/dateformat'))}-->
  <!--{echo date("Y-m/d H:i:s",这里填写时间参数)}-->

截取字符字数

<!--{echo cutstr(这里填写参数,40)}-->

过滤DISCUZ代码

preg_replace ("/\[[a-z][^\]]*\]|\[\/[a-z]+\]/i",'',preg_replace("/\[attach\]\d+\[\/attach\]/i",'',$message));

写入数据库

if(submitcheck('tijiao')) {
          $setarr = array(
                  'tid' => $_GET['topicid'],
                  'name' => $_POST['name'],
                  'position' => $_GET['position'],
                  'dateline' => $_G['timestamp'],
          );
          DB::insert('abc', $setarr, 1);
          $query = DB::query("UPDATE ".DB::table('abc')." SET stickreply='1' WHERE tid='$tid'");
          $query = DB::query("DELETE FROM ".DB::table('abc')." WHERE pid='$pid'");
          showmessage('成功的提示信息', "跳转地址");
  }

表单提交

<form action="do.php" method="post" autocomplete="off">
          <input type="hidden" value="{FORMHASH}" name="formhash" />
          最低奖金

      最高奖金

          <button value="true" name="tijiao" type="submit">提交设置</button>
          <input type="hidden" name="tijiao" value="true" />
  </form>

以下两个时间格式是对等关系

date("Ymd",time());  20150212
  FROM_UNIXTIME(dateline, '%Y%m%d')

前者用于PHP，后者用于数据库调用的字段的格式化

调用图片附件

<!--{eval $biaoid = substr($value[tid], -1); $cover = DB::result(DB::query("SELECT attachment FROM ".DB::table('forum_attachment_'.$biaoid.'')." WHERE tid = '$value[tid]'"));}-->

数据库循环嵌套调用

<!--{eval $slides = DB::fetch_all("SELECT * FROM ".DB::table('a')." WHERE `uid`= $_G[uid] ORDER BY `id` DESC");}-->
  <!--{loop $slides $slide}-->
  $slide[name]
  <!--{/loop}-->

ucenter无法登录
打开uc_server/model/admin.php
找到第22行的

$this->cookie_status = 0;

改成

$this->cookie_status = isset($_COOKIE['sid']) ? 1 : 0;

无刷新切换li标签并且同时加载框架页面

<script type="text/javascript">
  var jq = jQuery.noConflict();
  jq(function(){
  jq("#changemenu>li").mouseover(function(){
  jq("#changemenu>li").each(function(i){
  jq(this).removeClass("current");
  });
  jq(this).addClass("current");
  document.getElementById("changenr").innerHTML='<iframe src="do.php?id='+jq(this).attr('dataid')+'" height="350" width="1070" frameborder="0" scrolling="no"></iframe>';
  }).mouseout(function(){
  jq(this).addClass("current");
  });
  });
  </script>
  <ul id=“changemenu”>
     <li class=“current” dataid=“1”></li>
     <li dataid=“2”></li>
  </ul>
  <div id=“changenr”></div>

快速发帖

<a href="forum.php?mod=misc&action=nav">发布新话题</a>

DISCUZ JSON数据解析获取

$str = 'a:2:{s:8:\"sitename\";s:8:\"班班学院\";s:3:\"pic\";s:12:\"banbanso.jpg\";}';
  $newstr = str_replace("\\","",$str);
  $data = unserialize($newstr);
  echo $data[sitename];//输出结果为班班学院

DISCUZ云平台站点同步提示DNS错误解决方法
打开source\plugin\manyou\Service\Client\Restful.php，找到代码
```
$result = $this->_fsockopen($url, 0, $data, '', false, $ip, 5);
```
修改为
```
$result = $this->_fsockopen($url, 0, $data, '', false, $ip, 30);
```

li标签列表自适应宽度JS实现代码（去除每行最后一个li标签的右边距）

<script type="text/javascript" src="https://www.banban.so/new/bang/uploads/146383669567393.js"></script>
  <style>ul,li{margin:0; padding:0; list-style:none;}.list{width:100%; margin:0 auto;}.list li{width:32%; float:left; margin-right:2%; background:#0092B9; text-align:center; color:#fff; height:300px; line-height:300px; margin-bottom:10px;}</style>
  <div class="list">
          <ul>
                      <li>dz班班学院</li>
          <li>dz班班学院</li>
          <li>dz班班学院</li>
          <li>dz班班学院</li>
          <li>dz班班学院</li>
          <li>dz班班学院</li>
      </ul>
  </div>
  <script type="text/javascript">
      $('.list li:nth-child(3n)').css('marginRight', '0');
  </script>

常用词汇

  select 选择
  count 总数
  table 表
  where 条件
  result 结果
  perpage 每页
  curpage 当前页
  update 更新
  delete 删除
  insert 写入
  dateline 日期
  time 时间
  echo 输出   <?php   echo '123';   ?>
  multi 分页函数
  if 如果
  else 否则
  elseif
  start 起始
  limit 限制  limit 10
  DESC 倒序
  ASC 正序

活动帖发布页面核心处理文件

source\class\extend\extend_thread_activity.php

调用分类信息字段名称（仅适用帖子详情页）
```
$_G['forum_option']['字段变量名']['title']
```
调用分类信息字段的值（仅适用帖子详情页）
```
$_G['forum_option']['字段变量名']['value']
```

~~怎么感觉毫无卵用?~~

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