用户注册的效果很好，只是当用户尝试登录时，他选择的密码不被接受，从后端生成一个新密码并尝试使用生成的密码登录。我错过了什么？

$email = $_POST["email"];
$password = $_POST["password1"];
$firstName = $_POST["fname"];
$lastName = $_POST["lname"];
$company = $_POST["company"];
$website = $_POST["website"];
$address = $_POST["address"];
$street = $_POST["street"];
$city = $_POST["city"];
$state = $_POST["state"];
$zip = $_POST["zip"];
$country = $_POST["country"];
$home = $_POST["home"];
$office = $_POST["office"];
$mobile = $_POST["mobile"];


if( null == username_exists( $email ) ) {

  $user_id = wp_create_user( $email, $password, $email );

  wp_update_user(
    array(
      \'ID\'          =>    $user_id,
      \'nickname\'    =>    $email_address,
      \'first_name\'  =>    $firstName,
      \'last_name\'   =>    $lastName,
      \'user_url\'    =>    $website
    )
  );

  update_user_meta( $user_id, \'company\', $company );
  update_user_meta( $user_id, \'address\', $address );
  update_user_meta( $user_id, \'street\', $street );
  update_user_meta( $user_id, \'city\', $city );
  update_user_meta( $user_id, \'province\', $state );
  update_user_meta( $user_id, \'postalcode\', $zip);
  update_user_meta( $user_id, \'country\', $country );
  update_user_meta( $user_id, \'home\', $home );
  update_user_meta( $user_id, \'office\', $office );
  update_user_meta( $user_id, \'mobile\', $mobile );

  $user = new WP_User( $user_id );

  $user->set_role( \'subscriber\' );

} else {
    echo \'user exists\';
}