PHP program is negating a function?
$user = mysql_real_escape_string($_POST['User']);
$pass = mysql_real_escape_string(md5($_POST['Pass']));
$conn = mysql_connect("localhost", "root") or die(mysql_error());
(mysql_select_db('fireworks', $conn));
$ask = "SELECT * FROM name WHERE (User = '" . $user . "') and (Pass = '" . $pass . "');";
$result = mysql_query($ask);

if (strlen($user) < 1){
    if (strlen($pass) < 1){
        print "<p class = 'Back'>Epic Fail</p>";
        print "<p>You forgot to put in your Username or Password.</p>";
    }
}

if (strlen($user) >= 1){
    if (mysql_num_rows($result) >= 1) {
        while ($row = mysql_fetch_array($result))
        {
            print "<p class='Back'>Welcome back</p><p>" . $row['User'] . "</p>";
        }
    }else{
        print "YOU FAIL!!!";
    }
}

if (strlen($user) < 1){
if (strlen($pass) < 1){
print "<p>You forgot to put in your Username or Password.</p>";
}
}

if (strlen($user) < 1 or strlen($pass) < 1){
....
}

if (strlen($user) < 1 || strlen($pass) < 1){ .... }

if (strlen($user) < 1 || strlen($pass) < 1)
{
    print "<p class = 'Back'>Notice</p>";
    print "<p>You forgot to put in your Username or Password.</p>";

}

if(!empty($_POST['User']) || trim(strlen($_POST['User'])) < 1) {
 // database stuff
}