Create user

$password = user_password(12);
$newUser = array(
  'name' => 'user'.time(),
  'pass' => $password,
  'password' => $password,
  'mail' => $form_state["values"]["field_email"][0]["value"],
  'status' => 1,
);
$newUser=user_save(null, $newUser);
_user_mail_notify("register_admin_created", $newUser);