PHP PDO connection failure
<?php

include("class.php");

$dbhost     = "localhost";
$dbname     = "db";
$dbuser     = "user";
$dbpass     = "pass";

$conn = new PDO("mysql:host=$dbhost;dbname=$dbname",$dbuser,$dbpass);

$username = $_POST['username'];
$password = $_POST['password'];
$email = strtolower($_POST['email']);
$firstName = ucwords(strtolower($_POST['firstName']));
$lastName = ucwords(strtolower($_POST['lastName']));
$date = date("Y-m-d");
$hash = Secure::Encrypt($username, $password);

$sql = "INSERT INTO users (username,password,email,firstName,lastName,createDate) VALUES (:username,:password,:email,:firstName,:lastName,:date)";
$q = $conn->prepare($sql);
$q->execute(array(
':username'=>$username,
':password'=>$hash,
':email'=>$email,
':firstName'=>$firstName,
':lastName'=>$lastName,
':date'=>$date));

?>