dedecms关键词维护里面字数多的词优先字数少的词的解决办法

织梦后台的关键词维护默认的情况是字数少的词优先于字数多的词，比如我们有两个这样的词：创业、创业方向，第二个词包含了第一个词，在文章中如果出现“创业方向”这个词，默认情况下只会给创业两个字添加关键词超链接，而不是整个词，那么我们怎么样才能实现字数多的词优先于字数少的词呢？下面就告诉大家具体的解决方法：

我们找到并打开/include/arc.archives.class.php文件，在里面找到如下代码：

01	function ReplaceKeyword($kw,&$body)

02

{

03	global $cfg_cmspath;

04	$maxkey = 5;

05	$kws = explode(",",trim($kw));    //以分好为间隔符

06

$i=0;

07	$karr = $kaarr = $GLOBALS['replaced'] = array();

08

09

//暂时屏蔽超链接

10	$body = preg_replace("#(<a(.*))(>)(.*)(<)(\/a>)#isU", '\\1-]-\\4-[-\\6', $body);

11

12

/*

13	foreach($kws as $k)

14

{

15	$k = trim($k);

16	if($k!="")

17

{

18	if($i > $maxkey)

19

{

20

break;

21

}

22	$myrow = $this->dsql->GetOne("SELECT * FROM #【分隔符】@__keywords WHERE keyword='$k' AND rpurl<>'' ");

23	if(is_array($myrow))

24

{

25	$karr[] = $k;

26	$GLOBALS['replaced'][$k] = 0;

27	$kaarr[] = "<a href='{$myrow['rpurl']}'><u>$k</u></a>";

28

}

29

$i++;

30

}

31

}

32

*/

33	$query = "SELECT * FROM #【分隔符】@__keywords WHERE rpurl<>'' ORDER BY rank DESC";

34	$this->dsql->SetQuery($query);

35	$this->dsql->Execute();

36	while($row = $this->dsql->GetArray())

37

{

38	$key = trim($row['keyword']);

39	$key_url=trim($row['rpurl']);

40	$karr[] = $key;

41	$kaarr[] = "<a href='$key_url' target='_blank'><u>$key</u></a>";

42

}

43

44	// 这里可能会有错误

45	$body = @preg_replace("#(^|>)([^<]+)(?=<|$)#sUe","_highlight('\\2', \$karr, \$kaarr, '\\1')", $body);

46

47

//恢复超链接

48	$body = preg_replace("#(<a(.*))-\]-(.*)-\[-(\/a>)#isU",'\\1>\\3<\\4', $body);

49	return $body;

50

}

注意查找代码的时候先手动去掉代码里面的【分隔符】字样！

找到后将其替换为如下代码：

01	function ReplaceKeyword($kw,&$body)

02

{

03	global $cfg_cmspath,$dsql;

04	$maxkey = 5;

05	$kws = explode(",",trim($kw)); //以分好为间隔符

06

$i=0;

07	$karr = $kaarr = $GLOBALS['replaced'] = array();

08

//暂时屏蔽超链接

09	$body = preg_replace("/(<a(.*))(>)(.*)(<)(\/a>)/isU", '\\1-]-\\4-[-\\6', $body);

10	$query="SELECT * FROM #【分隔符】@__keywords WHERE rpurl<>'' and sta=1 ORDER BY length(keyword)desc";

11	$dsql->SetQuery($query);

12	$dsql->Execute();

13	while($row = $dsql->GetArray())

14

{

15	$key = trim($row['keyword']);

16	$key_url=trim($row['rpurl']);

17	$karr[] = $key;

18	$kaarr[] = "<u><a href='$key_url' target='_blank'>$key</a></u>";

19

}

20	foreach ($karr as $key => $word)

21

{

22	$body = preg_replace("/(^|>)([^<]+)(?=<|$)/sUe", "_highlight('\\2', \$karr[$key], \$kaarr[$key],

23

24

25	'\\1')", $body);

26	//echo $body."<br/>";

27

//恢复超链接

28	$body = preg_replace("/(<a(.*))-\]-(.*)-\[-(\/a>)/isU", '\\1>\\3<\\4', $body);//暂时屏蔽超链接

29	$body = preg_replace("/(<a(.*))(>)(.*)(<)(\/a>)/isU", '\\1-]-\\4-[-\\6', $body);

30

}

31

//恢复超链接

32	$body = preg_replace("/(<a(.*))-\]-(.*)-\[-(\/a>)/isU", '\\1>\\3<\\4', $body);

33

34

35	return $body;

36

}

37

}

38	//End Archives

39	//高亮专用, 替换多次是可能不能达到最多次

40	function _highlight($string, $words, $result, $pre)

41

{

42	global $cfg_replace_num;

43	$string = str_replace('\"', '"', $string);

44	if($GLOBALS['replaced'][$words] == 1){

45	return $pre.$string;

46

}

47	if($cfg_replace_num > 0){

48	$string = preg_replace("/".preg_quote($words)."/", $result, $string, $cfg_replace_num);

49	if(strpos($string, $words) !== false)

50

{

51	$GLOBALS['replaced'][$words] = 1;

52

}

53

}

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

55

}

56	return $pre.$string;

57

}

注意手动去掉代码里面的【分隔符】字样！

替换完成后保存即可，然后生成一下文章内容试试。

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转载自织梦模板教程（www.dede58.com）