比如同时有两个关键词， dedecms 和 　dedecms模板　　这里，如果出现dedecms模板，他就会给 dedecms加上个链接，然后 dedecms模板又套一个链接，造成页面HTML标签不对称，对SEO很不友好。。

下面给出解决方法。。。

找到function ReplaceKeyword($kw,&$body)这行，从这行开始一直替换到文件结束。这段代码我亲自测试过，可以解决，网上有很多这样的，我都一个个的测试过，都不行，有的可能是文件中的符号有问题。

function ReplaceKeyword($kw,&$body)
{
global $cfg_cmspath;
$maxkey = 5;
$kws = explode(",",trim($kw)); //以分好为间隔符
$i=0;
$karr = $kaarr = $GLOBALS['replaced'] = array();


//暂时屏蔽超链接
$body = preg_replace("/(<a(.*))(>)(.*)(<)(/a>)/isU", '\1-]-\4-[-\6', $body);

global $dsql;
$query="SELECT * FROM dede_keywords WHERE rpurl<>'' and sta=1 ORDER BY length(keyword)desc";
$dsql->SetQuery($query);
$dsql->Execute();
while($row = $dsql->GetArray())
{
$key = trim($row['keyword']);
$key_url=trim($row['rpurl']);
$karr[] = $key;
$kaarr[] = "<u><a href='$key_url' target='_blank' title='$key'>$key</a></u>";
}
foreach ($karr as $key => $word)
{

$body = preg_replace("/(^|>)([^<]+)(?=<|$)/sUe", "_highlight('\2', $karr[$key], $kaarr[$key], '\1')", $body);
//echo $body."<br/>";

//恢复超链接
$body = preg_replace("/(<a(.*))-]-(.*)-[-(/a>)/isU", '\1>\3<\4', $body);
//暂时屏蔽超链接
$body = preg_replace("/(<a(.*))(>)(.*)(<)(/a>)/isU", '\1-]-\4-[-\6', $body);

}

//恢复超链接
$body = preg_replace("/(<a(.*))-]-(.*)-[-(/a>)/isU", '\1>\3<\4', $body);
return $body;
}

}//End Archives

//高亮专用, 替换多次是可能不能达到最多次
function _highlight($string, $words, $result, $pre)
{
global $cfg_replace_num;
$string = str_replace('&;', '"', $string);

if($GLOBALS['replaced'][$words] == 1)
{
return $pre.$string;
}

if($cfg_replace_num > 0)
{
$string = preg_replace("/".preg_quote($words)."/", $result, $string, $cfg_replace_num);
if(strpos($string, $words) !== false)
{
$GLOBALS['replaced'][$words] = 1;
//echo $words;
}

}
else
{
$string = str_replace($words, $result, $string);
}

return $pre.$string;
}