Eregi函数已弃用

Question

这是我的代码（来自submit.php）抛出错误：

$email_from = $_POST['email']; // required
$error_message = "";
$email_exp = "^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$";
if(!eregi($email_exp,$email_from)) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}

我知道我需要使用preg_match，但我不知道如何实现它。我已经阅读了文档，但我仍然没有得到它。谢谢！

Answer 1

删除此

  $email_exp = "^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$";
  eregi($email_exp,$email_from) 

并使用

$email_exp = "/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i";
preg_match($email_exp, $email_from)

Answer 2

$email_exp = "/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i";
 if(preg_match($email_exp,$email_from) != 1) {
    $error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}

实际上，它与eregi非常简单且非常相似。