頁面連結資料庫時連結不到資料庫去做新增、刪除、修改、查詢

及時檢視後的畫面是出現了"the requested URL /cn79-1.php was not found on this server"
http://images.plurk.com/685c4e4ffccad7e67e324e9870872115.jpg
程式碼01
http://images.plurk.com/537a4d20f7781d4951b081a9d999879c.jpg
程式碼02
http://images.plurk.com/274da459e1d745fa6f1e0b145ca0b2a7.jpg
程式碼03
http://images.plurk.com/289a99adc76e887f237f0b0c3ce29706.jpg
程式碼04
http://images.plurk.com/984fd13a3918c71f75ee2722afd076ba.jpg
程式碼05
http://images.plurk.com/d26a2bc0200a31629fa9792ea7d99d03.jpg
程式碼06
http://images.plurk.com/c99e8645569d41b7a7c6c74e29ad9270.jpg
程式碼07
http://images.plurk.com/42d651cea03d53dde7a72eea8b9dd6c3.jpg
最後一段.....
//刪除資料庫資料語法
$sql = "delete from member_table where username='$id'";
if(mysql_query($sql))
{
echo '刪除成功!';
echo '<meta http-equiv=REFRESH CONTENT=2;url=member.php>';
}
else
{
echo '刪除失敗!';
echo '<meta http-equiv=REFRESH CONTENT=2;url=member.php>';
}
}
else
{
echo '您無權限觀看此頁面!';
echo '<meta http-equiv=REFRESH CONTENT=2;url=index.php>';
}
?>

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好了~問題來了.....我好奇一個點!!UI設計的差不多候用及時檢視時我的UI卻連不到我的資料庫....不知道問題出在哪...請大哥指點迷津