这是我的代码，我是通过教程学习的，所以这不是我自己的代码，但我做错了什么？
我期待着你们的来信
打开php标签
$username = "";
$password = "";
$hostname = "";
$dbhandle = mysql_connect($hostname, $username, $password) or die ("Really could not connect to database!");
$selected = mysql_select_db("login", $dbhandle);
$myusername = $_POST['user'];
$mypassword = $_POST['pass'];
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$query = "SELECT * FROM Users WHERE Username='$myusername' and Password='$mypassword'";
$result = mysql_query($query);
$count = mysql_num_rows($result);
mysql_close();
if($count==1) {
echo 'It worked!';
}
关闭php标记
使用mysql_error:-
$query = "SELECT * FROM Users WHERE
Username='$myusername' and Password='$mypassword'";
$result = mysql_query($query);
if(!$result)
die(mysql_error($dbhandle));