php，mysql（检查用户名和密码）

how to check username and password validation by using Mysql without mysqli on xamp server ...for using mysql on my server shows the error ., so how can use mysql when connect the php on my server ..

You want to do it the old way? Here you go:

$conn = MySQL_Connect($hostname, $username, $password);
MySQL_Select_DB($Database, $conn);
$result = MySQL_Query($Query, $conn);
if(!$result)
    echo mysql_errno($conn) . ": " . mysql_error($conn);    
else
    return $result;