dedecms织梦图集在首页列表页调用并且自定义输出几张的教程

function Getimgurls($aid,$num=4)   
{
    global $dsql;
    $imgurls = $result = '';
    $imgrow = $dsql->GetOne( "Select imgurls From `mydiy_addonimages` where aid='$aid' ");
    $imgurls = $imgrow['imgurls'];
    if($imgurls != '')
    {
        $dtp = new DedeTagParse();
        $dtp->LoadSource($imgurls);
        $images = array();
        if(is_array($dtp->CTags))
        {
            foreach($dtp->CTags as $ctag)
            {
                if($ctag->GetName() == 'img')
                {
                    $row = array();
                    $row['width'] = $ctag->GetAtt('width');
                    $row['height'] = $ctag->GetAtt('height');
                    $row['imgsrc'] = trim($ctag->GetInnerText());
                    $row['text'] = $ctag->GetAtt('text');
                    $images[] = $row;
                }
            }
        }
        $dtp->Clear();
        $i = 0;
        foreach($images as $row)
        {
            if($i == $num) break;
            if($row['imgsrc'] != '')
            {
                $result .= "<li><a title='{$row['text']}' href='{$row['imgsrc']}'><img src='{$row['imgsrc']}' mid='{$row['imgsrc']}' big='{$row['imgsrc']}' width='70' height='70'></a></li>";
            }
            $i++;
        }
        return $result;
    } 
}