dedecms 调用文章缩略图

{dede:arclist typeid="0" row="10" imgwidth="150" imgheight="100"}
    <li>
        <a href="[field:arcurl/]" target="_blank">
            <img src="[field:litpic/]" width="[field:imgwidth/]" height="[field:imgheight/]" alt="[field:title/]" />
        </a>
        <p>[field:title/]</p>
    </li>
{/dede:arclist}

{dede:field name='litpic' runphp='yes'}
    global $dsql;
    $aid = $refObj->Fields['id'];
    $row = $dsql->GetOne("SELECT body FROM dede_addonarticle WHERE aid='$aid'");
    preg_match_all("/<img[^>]+src=[\"']?([^>\"']+)[\"']?[^>]*>/i", $row['body'], $matches);
    if (!empty($matches[1][0])) {
        @preg_match("/(http|https):\/\//",$matches[1][0],$matchurl);
        if(empty($matchurl[0])) {
            $litpic = $GLOBALS['cfg_basehost'] . $matches[1][0];
        } else {
            $litpic = $matches[1][0];
        }
    } else {
        $litpic = '/images/defaultpic.gif'; // 默认图片
    }
    @endphp{$litpic}@endphp;
{/dede:field}