如何在Javascript和PHP中验证非英语(UTF-8)编码的电子邮件地址？

function validateEmail(email) {
  const regex = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
  return regex.test(email);
}

function validateEmail($email) {
  $regex = '/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/';
  return preg_match($regex, $email);
}

function validateEmail(email) {
  try {
    new Intl.EmailAddress(email);
    return true;
  } catch (error) {
    return false;
  }
}

function validateEmail($email) {
  return filter_var($email, FILTER_VALIDATE_EMAIL);
}

const validator = require('validator');

function validateEmail(email) {
  return validator.isEmail(email);
}

require_once 'vendor/autoload.php';

use Egulias\EmailValidator\EmailValidator;
use Egulias\EmailValidator\Validation\RFCValidation;

function validateEmail($email) {
  $validator = new EmailValidator();
  return $validator->isValid($email, new RFCValidation());
}