$username = htmlentities(trim($_POST['txt_username']));
$unpass = htmlentities(trim($_POST['txt_password']));
$password = password_hash($unpass, PASSWORD_BCRYPT, ['cost' => 12] );
$unemail = $_POST['txt_email'];
$email = filter_var($unemail, FILTER_VALIDATE_EMAIL);


if (isset($_POST['btn_signup']) ){

    if($guest->check_user_exists($username)){
        $errors[]= "Username Already Taken";
    }
    elseif(strlen($username) < 6){
      $errors[] = "Username must be at least 6 characters";
    }
    elseif(strlen($unpass) < 6){
      $errors[] = "Password must be at least 6 characters";
    }

    elseif($guest->check_email_exists($email)){
        $errors[]= "Email Already Taken";
    }

    elseif($guest->signup($email,$password,$username)){
        header("Location:index.php?registered");
        die('didnt redirect');
    }
    else{
      $errors[]= "Invalid Entry";
    }


}