/** * 高亮问题修正, 排除alt title <a></a>直接的字符替换 * * @param string $kw * @param string $body * @return string */function ReplaceKeyword($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);// $query = "SELECT * FROM keywords WHERE rpurl<>'' ORDER BY rank DESC"; // 原版的$query="SELECT * FROM `keywords` WHERE rpurl<>'' and sta=1 ORDER BY length(keyword) DESC"; // 修改 优先处理长关键词$this->dsql->SetQuery($query);$this->dsql->Execute();while($row = $this->dsql->GetArray()){$key = trim($row['keyword']);$key_url=trim($row['rpurl']);$karr[] = $key;$kaarr[] = "<a class='title-prefix' href='$key_url' target='_blank'>$key</a>"; // 删除 <u> 和 </u> ，增加class属性}// 这里可能会有错误// $body = @preg_replace("#(^|>)([^<]+)(?=<|$)#sUe", "_highlight('\2', $karr, $kaarr, '\1')", $body);foreach ($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;}

//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($cfg_replace_num > 0){// foreach ($words as $key => $word)// {// if($GLOBALS['replaced'][$word] == 1)// {// continue;// }//$string = preg_replace("#".preg_quote($key)."#", $result[$key], $string, $cfg_replace_num);$string = preg_replace("#".preg_quote($words)."#", $result, $string, $cfg_replace_num);// 修改后if(strpos($string, $words) !== FALSE){$GLOBALS['replaced'][$words] = 1;}// }}else{$string = str_replace($words, $result, $string);}return $pre.$string;}