dedecms自动给文章中的关键字加超链接完整版

天外飘仙

在 include/arc.archives.class.php  这个文件中 有两个函数需要修改  ReplaceKeyword 和 _highlight
把这两个函数 第1014行开始到倒数第二行结束  修改为

1. function ReplaceKeyword($kw,&$body)
   
2. {
   
3. global $cfg_cmspath;
   
4. $maxkey = 5;
   
5. $kws = explode(",",trim($kw)); //以分好为间隔符
   
6. $i=0;
   
7. $karr = $kaarr = $GLOBALS['replaced'] = array();
   
8.    //暂时屏蔽超链接
   
9. $body = preg_replace("/(<a(.*))(>)(.*)(<)(\/a>)/isU", '\\1-]-\\4-[-\\6', $body);
   
10.    global $dsql;
    
11. $query="SELECT * FROM dede_keywords WHERE rpurl<>'' and sta=1 ORDER BY length(keyword)desc";
    
12. $dsql->SetQuery($query);
    
13. $dsql->Execute();
    
14. while($row = $dsql->GetArray())
    
15. {
    
16. $key = trim($row['keyword']);
    
17. $key_url=trim($row['rpurl']);
    
18. $karr[] = $key;
    
19. $kaarr[] = "<b><a href='$key_url' target='_blank'>$key</a></b>";
    
20. }
    
21. foreach ($karr as $key => $word)
    
22. {
    
23.     $body = preg_replace("/(^|>)([^<]+)(?=<|$)/sUe", "_highlight('\\2', \$karr[$key], \$kaarr[$key], '\\1')", $body);
    
24. //echo $body."<br/>";
    
25. //恢复超链接
    
26. $body = preg_replace("/(<a(.*))-\]-(.*)-\[-(\/a>)/isU", '\\1>\\3<\\4', $body);
    
27. //暂时屏蔽超链接
    
28. $body = preg_replace("/(<a(.*))(>)(.*)(<)(\/a>)/isU", '\\1-]-\\4-[-\\6', $body);
    
29.    }
    
30.    //恢复超链接
    
31. $body = preg_replace("/(<a(.*))-\]-(.*)-\[-(\/a>)/isU", '\\1>\\3<\\4', $body);
    
32. return $body;
    
33. }
    
34. }//End Archives
    
35. //高亮专用, 替换多次是可能不能达到最多次
    
36. function _highlight($string, $words, $result, $pre)
    
37. {
    
38. global $cfg_replace_num;
    
39. $string = str_replace('"', '"', $string);
    
40. if($GLOBALS['replaced'][$words] == 1)
    
41. {
    
42. return $pre.$string;
    
43. }
    
44. if($cfg_replace_num > 0)
    
45. {
    
46. $string = preg_replace("/".preg_quote($words)."/", $result, $string, $cfg_replace_num);
    
47. if(strpos($string, $words) !== false)
    
48. {
    
49. $GLOBALS['replaced'][$words] = 1;
    
50. //echo $words;
    
51. }
    
52. }
    
53. else
    
54. {
    
55. $string = str_replace($words, $result, $string);
    
56. }
    
57. return $pre.$string;
    
58. }

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保存替换就可以了