{dede:field.flag function='IsCommendArchives(@me)'/}

function IsCommendArchives($iscommend){    global $arcatts;    $sn = '';    foreach($arcatts as $k=>$v)    {        $v = cn_substr($v, 2);        $sn .= (preg_match("#".$k."#", $iscommend) ? ','.$v : '');    }    $sn = trim($sn);    if($sn=='') return '';    else return "$sn";}