织梦软件模型列表页/内容页获取下载地址

/**
 *  获取软件模型本地地址
 *
 * @access    public
 * @param     string  $aid  	文章id
 * @return    string
 */
if (!function_exists('GetDownLink'))
{
    function GetDownLink($aid)
    {
       global $dsql;
       $row= $dsql->GetOne("SELECT softlinks FROM `#@_addonsoft` WHERE aid = {$aid}");
           if(!is_array($row)){
            return '';
            }
           else{
            $dtp = new DedeTagParse();
            $dtp->LoadSource($row['softlinks']);
                foreach($dtp->CTags as $ctag)
                {
                    if($ctag->GetName()=='link')
                {
                    $link = trim($ctag->GetInnerText());
                }
            }
       }
       return  $link;
    }
}