树缝里也漏着一两点路灯光，没精打彩的，是渴睡人的眼。春尚浅，几处山顶上的梅花却挣扎着吐出红苞来。微风柔和地吹，柔和地爱抚我的面孔。荷塘里的荷花都羞涩地打着朵。落叶随着风高低起舞。
DedeCMS默认自带的相关文章是likearticle标签实现，实际应用的时候发现这个标签调用的相关文章并不完美，我们需要改进下，一般我们要调用相关文章都是以Tag或者keyword匹配，我们今天就做下改进，实现全站按TAG和关键字调用相关文章，这个方法可单用tag来调用相关文章，也可用tag+keyword来调用相关文章(默认tag优先于keyword，可以自己排序)，非常适合SEO，经测试效果极佳。
具体方法如下：
把下面的php代码换掉include/taglib/likearticle.lib.php里的代码：
<?php
if(!defined('DEDEINC')) exit('Request Error!');
/*--------------------------------------
按关键词关连文章的标签
eregtype属性
eregtype = keyword 只匹配关键字
eregtype = tag 只匹配tag
eregtype = all tag优先，不存在tag则匹配关键字
mytypeid='' 栏目ID,多个栏目用,隔开
---------------------------------------*/
function lib_likearticle(&$ctag,&$refObj)
{
global $dsql;
//属性处理
$attlist="row|12,titlelen|28,infolen|150,col|1,tablewidth|100,mytypeid|0,byabs|0,imgwidth|120,imgheight|90";
FillAttsDefault($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();
$typeid = ( !empty($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) && !ereg(',', $typeid) ) {
$typeid = GetSonIds($typeid);
}
if(!empty($refObj->Fields['tags']) && $eregtype != 'keyword' )
{
$tags = explode(',', addslashes($refObj->Fields['tags']));
$getsql = " tag like '".join("' OR tag like '", $tags)."' ";
$dsql->Execute('me', "Select * From `dede_tagindex` where $getsql ");
while($arow = $dsql->GetArray('me')) {
$tids[] = $arow['id'];
}
$tid = join(',', $tids);
if($tid!='')
{
$dsql->Execute("me", "Select aid From `dede_taglist` where tid in($tid) And arcrank > -1 group by aid order by aid desc limit 0, $row");
while($arow = $dsql->GetArray("me"))
{
$ids[] = $arow['aid'];
$arcid = $refObj->Fields['aid'];
}
}
}
if($eregtype == 'tag' && count($ids) == 0 )
{
return '';
}
else
{
if(count($ids) > 0)
{
if(!empty($typeid)) {
$typeid = " And arc.typeid in($typeid) And arc.id<>$arcid ";
}
$idsStr = join(',', $ids);
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.id in($idsStr) $typeid order by arc.id desc";
}
else
{
$limitRow = $row - count($ids);
$keyword = '';
if(!empty($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 ) {
$orderquery = " order by arc.id desc ";
}
else {
$orderquery = " order by ABS(arc.id - ".$arcid.") ";
}
if($keyword != '')
{
if(!empty($typeid)) {
$typeid = " And arc.typeid in($typeid) And arc.id<>$arcid ";
}
$query = "Select arc.*,tp.typedir,tp.typename,tp.corank,tp.isdefault,tp.defaultname,tp.namerule,
tp.namerule2,tp.ispart,tp.moresite,tp.siteurl,tp.sitepath
from `dede_archives` arc left join `dede_arctype` tp on arc.typeid=tp.id
where arc.arcrank>-1 and ($keyword) $typeid $orderquery limit 0, $row";
}
else
{
if(!empty($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 arc.arcrank>-1 and $typeid $orderquery limit 0, $row";
}
}
}
$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'> ";
}
$dtp2 = new DedeTagParse();
$dtp2->SetNameSpace('field', '[', ']');
$dtp2->LoadString($innertext);
$GLOBALS['autoindex'] = 0;
$line = $row;
for($i=0; $i < $line; $i++)
{
if($col>1) $artlist .= "<tr> ";
for($j=0; $j < $col; $j++)
{
if($col>1) $artlist .= " <td width='$colWidth'> ";
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'] = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif';
}
if(!eregi("^http://",$row['litpic']) && $GLOBALS['cfg_multi_site'] == 'Y')
{
$row['litpic'] = $GLOBALS['cfg_mainsite'].$row['litpic'];
}
$row['picname'] = $row['litpic'];
$row['stime'] = GetDateMK($row['pubdate']);
$row['typelink'] = "<a rel="nofollow noopener noreferrer" href='".$row['typeurl']."'>".$row['typename']."</a>";
$row['image'] = "<img src='".$row['picname']."' border='0' width='$imgwidth' height='$imgheight'>";
$row['imglink'] = "<a rel="nofollow noopener noreferrer" href='".$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']."'>".$row['title']."</font>";
if(ereg('b',$row['flag'])) $row['title'] = "<strong>".$row['title']."</strong>";
$row['textlink'] = "<a rel="nofollow noopener noreferrer" href='".$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()." ";
}
//if hasRow
else
{
$artlist .= '';
}
if($col>1) $artlist .= " </td> ";
}
//Loop Col
if($col>1) $i += $col - 1;
if($col>1) $artlist .= " </tr> ";
}
//loop line
if($col>1) $artlist .= " </table> ";
$dsql->FreeResult("al");
return $artlist;
}
?>
UTF-8格式文件下载 GBK/GB2312格式文件下载
调用代码为：
{dede:likearticle col='2' row='8' titlelen='48' mytypeid='4' eregtype=all|tag|keyword}
<li><a rel="nofollow noopener noreferrer" href="[field:arcurl/]">[field:title/]</a></li>
{/dede:likearticle}
代码释义：
eregtype属性
eregtype = keyword 只匹配关键字
eregtype = tag 只匹配tag
eregtype = all tag优先，不存在tag则匹配关键字
mytypeid='' 栏目ID,多个栏目用,隔开
以上就是DedeCMS通过Tag和Keyword标签获取相关文章的方法。世事往往如此，想回头也已经来不及，即使你肯沦为劣马，也不一定有回头草在等你。更多关于DedeCMS通过Tag和Keyword标签获取相关文章的方法请关注haodaima.com其它相关文章！
