Přihlašovací skript se nespouští

Zvažte následující:

Pozor na SQL injection (Zastaveno mysql_real_escape_string);
Dejte si pozor na fixaci relace / únos;
Pozor nebo útoky hrubou silou;

Zkontrolujte prosím http://php.net/pdo pro lepší zpracování chyb a parametry dotazu....

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $user = '***************';
    $pass = '***************';
    $host = '***************';
    $data = '***************';

    mysql_connect($host, $user, $pass) or die("Could not connect");
    mysql_select_db($data) or die("Database Not Found");

    $result=mysql_query("SELECT COUNT(1) FROM sec_login WHERE Username='".mysql_real_escape_string($_POST['username'])."' AND Password='".mysql_real_escape_string($_POST['password'])."'") or die(mysql_error());

    if(mysql_result($result) == 1) {
        $_SESSION['username'] = $_POST['username'];
        header("location: ../index.php");
        exit;
    } else {
        $message = 'You have failed to provide valid credentials.';
    }
} else {
    $message = '<form method="post">
                    <input type="text" name="username" value="username" />
                    <br />
                    <input type="password" name="password" value="password" />
                    <br />
                    <input type="submit" />
                </form>';
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>Untitled Document</title>
    </head>

    <body>
        <?php echo $message; ?>
    </body>
</html>

Přihlašovací skript se nespouští - Bluehost