dedecms 中标签{dede:likearticle }{/dede:likearticle}默认不支持order by 和subway属性,因此对我们需要用此标签做自定义调用，比如用likearticle只调用点击高的文章，就实现不了，因此我们需要对该标
源文件位置： include/taglib/likearticle.lib.php1.orderby 属性
首先获得标签传递过来的orderby的属性值
$orderby=$ctag->GetAtt('orderby');
在源代码中有这样一组代码
if( empty($arcid) || $byabs==0 ) {
$orderquery = " order by arc.id desc ";
}
else {
$orderquery = " order by ABS(arc.id - ".$arcid.") ";
}
likearticle标签默认的排序方式。赋予标签orderby属性那么这段代码就没意义了，先在源码中注释掉这段代码
直接延用默认的order by 子句变量$orderquery,这样sql语句就不用做更改了。
创建新变量 orderquery='';//mysql 查询语句中的order by子句 初始为空
然后根据传递的值做相应的判断，在这里只做一些***常用的值的判断
根据$orderby的值做不同的orderby 查询
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";//如果没有特定设置排序则按照权重先排序
else $orderquery = " order by arc.sortrank $orderWay";
ok这样就为likearticle标签增加了完整的order by 属性
2.subday属性（标签获取subday指定的***近几天的数据）
同样先获得subday 的属性值
$subday=$ctag->GetAtt('subday');
然后做时间差计算
if($subday > 0)
{
$ntime = gmmktime(0, 0, 0, gmdate('m'), gmdate('d'), gmdate('Y'));
$limitday = $ntime - ($subday * 24 * 3600);
$subdaysql = " and arc.senddate > $limitday ";
}
然后在标签源码的两处sql查询语句中 增加$subdaysql子句判断
***处为：
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row";
修改为:
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($keyword) $typeid $subdaysql $orderquery limit 0, $row";
第二处为：
$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";
修改为：
$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";
做完以上更改就为likearticle标签增加了subday属性
以下为修改完之后的likearticle.lib.php的完整代码（增加了 orderby 和 subday 属性）
修改之后完整文件：
<?php if(!defined('DEDEINC')) exit('Request Error!');
/**
* 自动关连文档标签
*
* @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>相关文档</name>
<type>全局标记</type>
<for>V55,V56,V57</for>
<description>自动关连文档标签</description>
<demo>
{dede:likearticle row='' col='' titlelen='' infolen=''}
<a href='[field:arcurl/]'>[field:title/]</a>
{/dede:likearticle}
</demo>
<attributes>
<iterm>col:分多少列显示（默认为单列）</iterm>
<iterm>row:返回文档列表总数</iterm>
<iterm>titlelen:标题长度 等同于titlelength</iterm>
<iterm>infolen:表示内容简介长度 等同于infolength</iterm>
<iterm>mytypeid:手工指定要限定的栏目id，用,分开表示多个</iterm>
<iterm>innertext:单条记录样式(指标签中间的内容)</iterm>
</attributes>
>>dede>>*/
function lib_likearticle(&$ctag,&$refObj)
{
global $dsql;
//属性处理
$attlist="row|12,titlelen|28,infolen|150,col|1,tablewidth|100,mytypeid|0,byabs|0,imgwidth|120,imgheight|90<span >,start|0,orderby|null,inword|*,channelid|*</span>";
FillAttsDefault($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 ;//连接,要允许使用连接表必须修改
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) )
{//指定频道,必须是整数序列
$channel_id = " channel in($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'];
//处理一些特殊字段
$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;
}