dedecms织梦文档内容自动关联tag标签加入内链的方法

function ReplaceKeyword($kw,&$body)
{
global $cfg_replace_num;
$search = "/(alt\s*=\s*|title\s*=\s*|src\s*=\s*)[\"|\'](.+?)[\"|\']/is";
$body = preg_replace_callback($search, array('Archives', '_base64_encode'), $body);
$addsql = '';
if(isset($this->Fields['tags']) && !empty($this->Fields['aid']))
{
$this->dsql->SetQuery("SELECT tid FROM `dede_taglist` WHERE aid = '{$this->Fields['aid']}' ");
$this->dsql->Execute();
$ids = '';
while($row = $this->dsql->GetArray())
{
$ids .= ( $ids=='' ? $row['tid'] : ','.$row['tid'] );
}
if($ids != '')
{
$addsql = " WHERE id IN($ids) ";
}
if($addsql=='') return $body;
}
$query = "SELECT * FROM `dede_tagindex` $addsql ORDER BY addtime DESC";
$this->dsql->SetQuery($query);
$this->dsql->Execute();
$linkdatas = array();
while($row = $this->dsql->GetArray())
{
$row['keyword'] = $row['tag'];
$row['rpurl'] = $cfg_cmsurl."/".urlencode($row['tag'])."/";
$linkdatas[] = $row;
}
if($linkdatas) {
$word = $replacement = array();
foreach($linkdatas as $v) {
$word1[] = '/(?!(<a.*?))' . preg_quote($v['keyword'], '/') . '(?!.*<\/a>)/s';
$word2[] = $v['keyword'];
$replacement[] = '<a href="'.$v['rpurl'].'" target="_blank">'.$v['keyword'].'</a>';
}
if($cfg_replace_num) {
$body = preg_replace($word1, $replacement, $body, $cfg_replace_num);
} else {
$body = str_replace($word2, $replacement, $body);
}
}
$body = preg_replace_callback($search, array('Archives', '_base64_decode'), $body);
return $body;
}
function _base64_encode($matches) {
return $matches[1]."\"".base64_encode($matches[2])."\"";
}
function _base64_decode($matches) {
return $matches[1]."\"".base64_decode($matches[2])."\"";
}