求指导,数据库图片输出分页

$sqlstr = "select count(*) as recount from photo";$query = mysql_query($sqlstr) or die(mysql_error());$result = mysql_fetch_assoc($query);$recount = $result['recount'];$pagesize = 3;$page = isset($_GET['page'])? $_GET['page'] : 1;$offset = ($page-1)*$pagesize;$sqlstr = "select * from photo limit $offset, $pagesize";$query = mysql_query($sqlstr) or die(mysql_error());while($thread=mysql_fetch_assoc($query)){	echo '<img  src="show.php?id='.$thread['id'].'" alt="求指导,数据库图片输出分页" >';}

$id = isset($_GET['id'])? $_GET['id'] : 0;$sqlstr = "select * from photo where id='".$id."'";$query = mysql_query($sqlstr) or die(mysql_error());$result = mysql_fetch_assoc($query);if($result){	header('content-type:'.$result['type']);	echo $result['binarydata'];}