if( empty($arcid) || $byabs==0 ) {   $orderquery = " order by arc.id desc ";}else {   $orderquery = " order by ABS(arc.id - ".$arcid.") ";}likearticle標簽默認的排序方式。賦予標簽orderby屬性那么這段代碼就沒意義了，先在源碼中注釋掉這段代碼直接延用默認的order by 子句變量$orderquery,這樣sql語句就不用做更改了。創建新變量 orderquery='';//mysql 查詢語句中的order by子句 初始為空然后根據傳遞的值做相應的判斷，在這里只做一些最常用的值的判斷根據$orderby的值做不同的orderby 查詢if($orderby=='hot' || $orderby=='click') $orderquery = " order by arc.click $orderWay";else if($orderby == 'sortrank' || $orderby=='pubdate') $orderquery = " order by arc.sortrank $orderWay";else if($orderby == 'id') $orderquery = " order by arc.id $orderWay";else if($orderby == 'near') $orderquery = " order by ABS(arc.id - ".$arcid.")";else if($orderby == 'lastpost') $orderquery = " order by arc.lastpost $orderWay";else if($orderby == 'scores') $orderquery = " order by arc.scores $orderWay";else if($orderby == 'rand') $orderquery = " order by rand()";else if($orderby == 'weight') $orderquery = " order by arc.weight asc";//如果沒有特定設置排序則按照權重先排序else $orderquery = " order by arc.sortrank $orderWay";ok這樣就為likearticle標簽增加了完整的order by 屬性2.subday屬性（標簽獲取subday指定的最近幾天的數據）同樣先獲得subday 的屬性值$subday=$ctag->GetAtt('subday');然后做時間差計算if($subday > 0)   {    $ntime = gmmktime(0, 0, 0, gmdate('m'), gmdate('d'), gmdate('Y'));    $limitday = $ntime - ($subday * 24 * 3600);    $subdaysql = " and arc.senddate > $limitday ";   }然后在標簽源碼的兩處sql查詢語句中 增加$subdaysql子句判斷第一處為：$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,           tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath            from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id            where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row";修改為:$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,           tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath            from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id            where arc.arcrank>-1 and ($keyword) $typeid $subdaysql $orderquery limit 0, $row";第二處為：$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,           tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath            from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id           where arc.arcrank>-1 and $typeid $orderquery limit 0, $row";修改為：$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,           tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath            from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id           where arc.arcrank>-1 and $typeid $subdaysql $orderquery limit 0, $row";做完以上更改就為likearticle標簽增加了subday屬性以下為修改完之后的likearticle.lib.php的完整代碼（增加了 orderby 和 subday 屬性）修改之后完整文件： 查看源碼打印代碼幫助<?php   if(!defined('DEDEINC')) exit('Request Error!'); /** * 自動關連文檔標簽 * * @version        $Id: likearticle.lib.php 1 9:29 2010年7月6日Z tianya $ * @package        DedeCMS.Taglib * @copyright      Copyright (c) 2007 - 2010, DesDev, Inc. * @license        http://help.dedecms.com/usersguide/license.html * @link           http://www.dedecms.com */     /*>>dede>><name>相關文檔</name><type>全局標記</type><for>V55,V56,V57</for><description>自動關連文檔標簽</description><demo>{dede:likearticle row='' col='' titlelen='' infolen=''}<a href='[field:arcurl/]'>[field:title/]</a>{/dede:likearticle}</demo><attributes>    <iterm>col:分多少列顯示（默認為單列）</iterm>     <iterm>row:返回文檔列表總數</iterm>    <iterm>titlelen:標題長度 等同于titlelength</iterm>    <iterm>infolen:表示內容簡介長度 等同于infolength</iterm>    <iterm>mytypeid:手工指定要限定的欄目id，用,分開表示多個</iterm>    <iterm>innertext:單條記錄樣式(指標簽中間的內容)</iterm></attributes> >>dede>>*/     function lib_likearticle(&$ctag,&$refObj) {     global $dsql;            //屬性處理     $attlist="row|12,titlelen|28,infolen|150,col|1,tablewidth|100,mytypeid|0,byabs|0,imgwidth|120,imgheight|90<span >,start|0,orderby|null,inword|*,channelid|*</span>";     FillAttsDefault($ctag->CAttribute->Items,$attlist);     extract($ctag->CAttribute->Items, EXTR_SKIP);     $revalue = '';            if(empty($tablewidth)) $tablewidth = 100;     if(empty($col)) $col = 1;     $colWidth = ceil(100/$col);     $tablewidth = $tablewidth."%";     $colWidth = $colWidth."%";            $ids = array();     $tids = array();            if(!empty($refObj->Fields['tags'])) {         $keyword = $refObj->Fields['tags'];     }     else {         $keyword = ( !empty($refObj->Fields['keywords']) ? $refObj->Fields['keywords'] : '' );     }            $typeid = ( !empty($mytypeid) ? $mytypeid : 0 );     if(empty($typeid))     {         if(!empty($refObj->Typelink->TypeInfos['reid'])) {              $typeid = $refObj->Typelink->TypeInfos['reid'];         }         else {              if(!empty($refObj->Fields['typeid'])) $typeid = $refObj->Fields['typeid'];         }                                  }             if( !empty($typeid) && !preg_match('#,#', $typeid) ) {         $typeid = GetSonIds($typeid);     }            $limitRow = $row - count($ids);     $keyword = '';     <span >if (empty($refObj->Fields['keywords']) && (! empty($inword)) && ($inword !='*') )     {        $refObj->Fields['keywords'] = $inword;     }</span>     if(!empty($refObj->Fields['keywords']))     {             $keywords = explode(',' , trim($refObj->Fields['keywords']));             $keyword = '';             $n = 1;             foreach($keywords as $k)             {                 if($n > 3)  break;                                     if(trim($k)=='') continue;                 else $k = addslashes($k);                                     $keyword .= ($keyword=='' ? " CONCAT(arc.keywords,' ',arc.title) LIKE '%$k%' " : " OR CONCAT(arc.keywords,' ',arc.title) LIKE '%$k%' ");                 $n++;             }     }     $arcid = (!empty($refObj->Fields['id']) ? $refObj->Fields['aid'] : 0);     if( empty($arcid) || $byabs==0 )     {                <span >switch ($orderby)         {//只能使用指定的列名           case 'typeid':           case 'typeid2':           case 'sortrank':           case 'channel':           case 'arcrank':           case 'click':           case 'title':           case 'shorttitle':           case 'writer':           case 'pubdate':           case 'senddate':                        case 'keywords':           case 'goodpost':           case 'badpost':           case 'notpost':             $orderby = 'arc.' . $orderby ;//連接,要允許使用連接表必須修改             break;           default:              $orderby = 'arc.id';         }</span>                $orderquery = " ORDER BY <span >{$orderby}</span> desc ";          }     else {         $orderquery = " ORDER BY ABS(arc.id - ".$arcid.") ";     }            <span >$start = (empty($start)?0:$start);            $channel_id = '';     //echo '<br>'.$channelid.'<br>';     if ( (!empty($channelid)) && preg_match("/^-?d+(,-?d+)*$/",$channelid) )     {//指定頻道,必須是整數序列       $channel_id = " channel in($channelid) and ";     }     </span>            if($keyword != '')     {              if(!empty($typeid)) {                      $typeid = " AND arc.typeid IN($typeid) AND arc.id<>$arcid ";              }              $query = "SELECT arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,                   tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath                   FROM `dede_archives` arc LEFT JOIN `dede_arctype` tp ON arc.typeid=tp.id                   where<span > $channel_id </span> arc.arcrank>-1 AND ($keyword)  $typeid $orderquery limit <span >$start</span>, $row";     }     else     {             if(!empty($typeid)) {                     $typeid = " arc.typeid IN($typeid) AND arc.id<>$arcid ";             }             $query = "SELECT arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,                   tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath                   FROM `dede_archives` arc LEFT JOIN `dede_arctype` tp ON arc.typeid=tp.id                  WHERE <span >$channel_id</span> arc.arcrank>-1 AND  $typeid $orderquery limit <span >$start</span>,$row";     }    // exit($query);            $innertext = trim( $ctag->GetInnerText() );     if($innertext=='') $innertext = GetSysTemplets('part_arclist.htm');        $dsql->SetQuery($query);     $dsql->Execute('al');     $artlist = '';     if($col > 1) {         $artlist = "<table width='$tablewidth' border='0' cellspacing='0' cellpadding='0'>rn";     }     $dtp2 = new DedeTagParse();     $dtp2->SetNameSpace('field', '[', ']');     $dtp2->LoadString($innertext);     $GLOBALS['autoindex'] = 0;     $line = $row;     for($i=0; $i < $line; $i++)     {         if($col>1) $artlist .= "<tr>rn";         for($j=0; $j < $col; $j++)         {             if($col>1) $artlist .= "    <td width='$colWidth'>rn";             if($row = $dsql->GetArray("al"))             {                 $ids[] = $row['id'];                 //處理一些特殊字段                 $row['info'] = $row['infos'] = cn_substr($row['description'],$infolen);                 $row['id'] =  $row['id'];                    if($row['corank'] > 0 && $row['arcrank']==0)                 {                     $row['arcrank'] = $row['corank'];                 }                    $row['filename'] = $row['arcurl'] = GetFileUrl($row['id'],$row['typeid'],$row['senddate'],$row['title'],$row['ismake'],                 $row['arcrank'],$row['namerule'],$row['typedir'],$row['money'],$row['filename'],$row['moresite'],$row['siteurl'],$row['sitepath']);                    $row['typeurl'] = GetTypeUrl($row['typeid'],$row['typedir'],$row['isdefault'],$row['defaultname'],$row['ispart'],                 $row['namerule2'],$row['moresite'],$row['siteurl'],$row['sitepath']);                    if($row['litpic'] == '-' || $row['litpic'] == '')                 {                     $row['litpic'] = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif';                 }                 if(!preg_match("#^http://#i", $row['litpic']) && $GLOBALS['cfg_multi_site'] == 'Y')                 {                     $row['litpic'] = $GLOBALS['cfg_mainsite'].$row['litpic'];                 }                 $row['picname'] = $row['litpic'];                 $row['stime'] = GetDateMK($row['pubdate']);                 $row['typelink'] = "<a href='".$row['typeurl']."'>".$row['typename']."</a>";                 $row['image'] = "<img src='".$row['picname']."' border='0' width='$imgwidth' height='$imgheight' alt='".preg_replace("#['><]#","",$row['title'])."'>";                 $row['imglink'] = "<a href='".$row['filename']."'>".$row['image']."</a>";                 $row['fulltitle'] = $row['title'];                 $row['title'] = cn_substr($row['title'], $titlelen);                 if($row['color']!='') $row['title'] = "<font color='".$row['color']."'>".$row['title']."</font>";                 if(preg_match('#b#', $row['flag'])) $row['title'] = "<strong>".$row['title']."</strong>";                 $row['textlink'] = "<a href='".$row['filename']."'>".$row['title']."</a>";                 $row['plusurl'] = $row['phpurl'] = $GLOBALS['cfg_phpurl'];                 $row['memberurl'] = $GLOBALS['cfg_memberurl'];                 $row['templeturl'] = $GLOBALS['cfg_templeturl'];                                    if(is_array($dtp2->CTags))                 {                     foreach($dtp2->CTags as $k=>$ctag)                     {                         if($ctag->GetName()=='array') {                             $dtp2->Assign($k,$row);                         }                         else {                             if(isset($row[$ctag->GetName()])) $dtp2->Assign($k,$row[$ctag->GetName()]);                             else $dtp2->Assign($k,'');                         }                     }                     $GLOBALS['autoindex']++;                 }                    $artlist .= $dtp2->GetResult()."rn";             }             //if hasRow             else             {                 $artlist .= '';             }             if($col>1) $artlist .= "    </td>rn";         }         //Loop Col         if($col>1) $i += $col - 1;         if($col>1) $artlist .= "    </tr>rn";     }     //loop line     if($col>1) $artlist .= "    </table>rn";     $dsql->FreeResult("al");     return $artlist; }