总是报错 ！

// 确定当前页数 $p 参数$p = $_GET['p']?$_GET['p']:1;// 数据指针$offset = ($p-1)*$pagesize;$query_sql = "SELECT * FROM guestbook ORDER BY id DESC LIMIT  $offset , $pagesize";$result = mysql_query($query_sql);// 如果出现错误并退出if(!$result) exit('查询数据错误：'.mysql_error());// 循环输出while($gb_array = mysql_fetch_array($result)){?>

=$gb_array['nickname']?> [=date("Y-m-d H:i", $gb_array['createtime'])?>]
=nl2br($gb_array['content'])?>
管理员回复： [=date("Y-m-d H:i", $gb_array['replytime'])?>]
=nl2br($gb_array['reply'])?>

 1) {	for($i=1;$i'.$i.'';		}	}}?>