织梦判断栏目是否有栏目图片，如果没有的话就显示栏目名称

  {dede:field.typeid runphp='yes'}   $ID = @me;   $sql = "SELECT * FROM `dede_arctype` WHERE id=$ID";   $query = mysql_query($sql);   $row=mysql_fetch_array($query);   $arcpic = "$row[arcpic]";   $typename = "$row[typename]";   if($arcpic == null)   @me = '<div><h1>'.$typename.'</h1></div>';    else @me = '<img src="'.$arcpic.'" width="100%" border="0" />';    {/dede:field.typeid}