织梦文档关键词维护中设置词语重叠后出错的修改方法 - 源码论坛,商业源码下载,尽在锦尚中国商业源码论坛

/**
* 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;
}

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//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;
}

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