<?php

$con = mysql_connect('localhost', $db_user, $db_pass) or die (mysql_error());
mysql_select_db($db_name, $con) or die (mysql_error());

  $email = addslashes($_POST['email']);
  $username = addslashes($_POST['username']);
  $password = md5($_POST['password']);
  $tb_name = "users";
  $db_user = '';
  $db_pass = '';
  $db_name = '';

  $errors = "";
  if (!isset($_POST['username']))
    $errors .= "Please provide a username. <br/>";
  if (!isset($_POST['password']))
    $errors .= "Please provide a password. <br/>";
  if (!isset($_POST['email']))
    $errors .= "Please provide an email address. <br/>";
  if ($errors == "") {
        mysql_query("INSERT INTO users VALUES($username,$password,$email,time())") or die (mysql_error());
            echo "Registration Successful!";
        } else {
            echo $errors."Please go back and try again.";
        }
?>