幫忙改一下錯,該如何處理

幫忙改一下錯
請好心人幫忙改一下錯

Warning: chkinput::include(conn/conn.php) [chkinput.include]: failed to open stream: No such file or directory in D:\AppServ\www\xiaoyuan\admin\chkadmin.php on line 15

Warning: chkinput::include() [function.include]: Failed opening 'conn/conn.php' for inclusion (include_path='.;C:\php5\pear') in D:\AppServ\www\xiaoyuan\admin\chkadmin.php on line 15

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in D:\AppServ\www\xiaoyuan\admin\chkadmin.php on line 16

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in D:\AppServ\www\xiaoyuan\admin\chkadmin.php on line 17



下面是chkadmin.php的代碼
header ( "Content-type: text/html; charset=gb2312" ); //設定檔案編碼格式
class chkinput{
var $name;
var $pwd;

function chkinput($x,$y)
{
$this->name=$x;
$this->pwd=$y;
}

function checkinput()
{
include("conn/conn.php");
$sql=mysql_query("select * from tb_admin_user where name='".$this->name."'",$conn);
$info=mysql_fetch_array($sql);
if($info==false)
{
echo "";
exit;
}
else
{
if($info[pwd]=='$pwd'){
header("location:index.php");
}
else
{
echo "";
exit;
}

}
}
}


$obj=new chkinput(trim($_POST[name]),md5(trim($_POST[pwd])));
$obj->checkinput();

?>



下面是 admin_user.php的代碼

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