织梦DEDECMS提取文章内容第一张图片或者多张图片输出

/**
 *  文章内容提取第一张图片
 *
 * @access    public
 * @param     string  $id		文档id
 * @param     string  $addField	字段名
 * @return    string
 */
if(!function_exists('getBodyonepic'))
{
	function getBodyonepic($id, $addField='body')
	{
		global $dsql;
		$row = $dsql->GetOne("SELECT a.litpic,c.addtable FROM #@__archives AS a LEFT JOIN #@__channeltype AS c ON a.channel=c.id where a.id='$id'");
		$addtable = trim($row['addtable']);
		if($row['litpic'] == '-' || $row['litpic'] == '')
		{
			$litpic = $GLOBALS['cfg_cmspath'].'/images/defaultpic.gif';
		}
		$row = $dsql->GetOne("SELECT $addField FROM `$addtable` WHERE aid=$id");
		$body = $row["$addField"];
		preg_match_all("/<img([^>]*)\s*src=('|\")([^'\"]+)('|\")/",$body,$matches);
		$imgsrc_arr = array_unique($matches[3]);
		$result = $imgsrc_arr[0] ? $imgsrc_arr[0] : $litpic;
		return $result;
	}
}

[field:id function=getBodyonepic(@me)/]

{dede:field.id function=getBodyonepic(@me)/}

/**
 *  文章内容提取图片(多张)自定义输出
 *
 * @access    public
 * @param     string  $string  	文档内容
 * @param     string  $num  	输出几张
 * @return    string
 */
if(!function_exists('getBodypics'))
{
	function getBodypics($string, $num)
	{
		preg_match_all("/<img([^>]*)\s*src=('|\")([^'\"]+)('|\")/",$string,$matches);
		$imgsrc_arr = array_unique($matches[3]);
		$count = count($imgsrc_arr);
		$i = 0;
		foreach($imgsrc_arr as $imgsrc)
		{
			if($i == $num) break;
			$result .= "<img src=\"$imgsrc\"/>";
			$i++;
		}
		return $result;
	}
}

{dede:arclist typeid='' row='' channelid='填模型id' addfields='body'}
[field:body function=getBodypics(@me,3)/]
{/dede:arclist}

{dede:field.body function=getBodypics(@me,3)/}