我一直在localhost上建立一个网络，当我尝试在主机上移动它时，它显示了很多错误。似乎无法连接到我的本地数据库。这是代码：

$host = "myip";
$user = "root";
$pass = "";
$db = "mydatabase";

mysql_connect($host, $user, $pass);
mysql_select_db($db);
$on = mysql_fetch_row(mysql_query("SELECT COUNT(online) FROM characters WHERE online=1"));
echo "<br>Online: $on[0]<br><br>";

这是输出：

Warning: mysql_connect() [function.mysql-connect]: Host 'myip' is not allowed to connect to this MySQL server in * on line 46

Warning: mysql_fetch_row(): supplied argument is not a valid MySQL result resource in * on line 48

Online:

感谢帮助