<?php
$username = ($_POST['username']);
$password = crypt(($_POST['password']));
$email = ($_POST['email']);

$loginlength = strlen($username);
$passlength = strlen($password);
$emaillength = strlen($email);

$data = array( 'username' => '$username', 'password' => '$password', 'email' => '$email' );
$sth = $dbh->("INSERT INTO users (username, password, email) VALUES (:username, :password, :email) ");
$sth->execute($data);

echo "worked";
?>