DeDecms教程

function ReplaceKeyword($kw,&$body)
{
   global $cfg_cmspath;
   $maxkey = 5;
   $kws = explode(",",trim($kw)); //以分号为间隔符
   $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 sucai_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'>$key</a></u>";
   }
   foreach ($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;
}