<?php
while($info = mysql_fetch_array( $check ))
    {
        $_POST['pass'] = stripslashes($_POST['pass']);
        $info['password'] = stripslashes($info['password']);
        $_POST['pass'] = md5($_POST['pass']);

        if ($_POST['pass'] != $info['password'])
        {
            die('Incorrect password, please try again.');
        }
        else
        {
            $_POST['username'] = stripslashes($_POST['username']);
            $hour = time() + 3600;
            setcookie(ID_my_site, $_POST['username'], $hour);
            setcookie(Key_my_site, $_POST['pass'], $hour);
            header("Location: index.php");
        }
    }
?>