在 PHP 中使用正则表达式进行电子邮件验证

Question

提问by Wayne Whitty

I am pretty much new with regular expression. I am developing a project in PHP and i need to validate email address. After searching in this site and google i found the following regular expression says it should work best.

我对正则表达式很陌生。我正在用 PHP 开发一个项目，我需要验证电子邮件地址。在这个网站和谷歌搜索后，我发现下面的正则表达式说它应该工作得最好。

if (preg_match("/^(?!(?:(?:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){255,})(?!(?:(?:\x22?\x5C[\x00-\x7E]\x22?)|(?:\x22?[^\x5C\x22]\x22?)){65,}@)(?:(?:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22))(?:\.(?:(?:[\x21\x23-\x27\x2A\x2B\x2D\x2F-\x39\x3D\x3F\x5E-\x7E]+)|(?:\x22(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x21\x23-\x5B\x5D-\x7F]|(?:\x5C[\x00-\x7F]))*\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-[a-z0-9]+)*\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-[a-z0-9]+)*)|(?:\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\]))$/iD", strtolower($mail_address))) {
    echo "valid email";
}

But when I use it I get error says,

但是当我使用它时，我收到错误消息，

"Warning: preg_match(): No ending delimiter '/' found"

What is wrong with this code?

这段代码有什么问题？

Answer 1

回答by Wayne Whitty

Use this instead of a regular expression:

使用它而不是正则表达式：

if(filter_var($email, FILTER_VALIDATE_EMAIL)) {
     //Valid email!
}

Using regular expressions to validate email addresses is not recommendedas it is certainly not pretty, especially if you don't want to exclude somebody who has a valid email address that is correct according to RFC 822 grammar.

不建议使用正则表达式来验证电子邮件地址，因为它肯定不美观，特别是如果您不想排除具有根据 RFC 822 语法正确的有效电子邮件地址的人。

http://www.php.net/filter_varis your best bet.

http://www.php.net/filter_var是您最好的选择。

A crazy example of a regex that attempts to validate email addresses according to RFC 822 grammar:

尝试根据 RFC 822 语法验证电子邮件地址的正则表达式的疯狂示例：

(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()<>@,;:\".\[\] filter_var('[email protected]', FILTER_VALIDATE_EMAIL)
0-1]+(?:(?:(?:\r\n)?[ \t]
)+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:
\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] <?php
$email = "[email protected]"; 
$regex = '/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/'; 
if (preg_match($regex, $email)) {
 echo $email . " is a valid email. We can accept it.";
} else { 
 echo $email . " is an invalid email. Please try again.";
}           
?>
0-1]+(?:(?:(
?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ 
\t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/  
0- filter_var($email, FILTER_VALIDATE_EMAIL)

31]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\
](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] if(filter_var($email, FILTER_VALIDATE_EMAIL)) {
     //yup its valid email
}
0-1]+
(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:
(?:\r\n)?[ \t])*))*|(?:[^()<>@,;:\".\[\] function isValidEmail($email)
{
    return preg_match('/\A[a-z0-9]+([-._][a-z0-9]+)*@([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,4}\z/', $email)
        && preg_match('/^(?=.{1,64}@.{4,64}$)(?=.{6,100}$).*/', $email);
}
0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z
|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)
?[ \t])*)*\<(?:(?:\r\n)?[ \t])*(?:@(?:[^()<>@,;:\".\[\] function validate($email) {
    return preg_match("/^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$/", $email);    
}
0-1]+(?:(?:(?:\
r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[
 \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] function validate($email) {

    $isValid = true;
    $atIndex = strrpos($email, "@");

    if (is_bool($atIndex) && !$atIndex) {
        $isValid = false;
    } else {
        $domain = substr($email, $atIndex + 1);
        $local = substr($email, 0, $atIndex);
        $localLen = strlen($local);
        $domainLen = strlen($domain);

        if ($localLen < 1 || $localLen > 64) {
            $isValid = false;
        } else if ($domainLen < 1 || $domainLen > 255) {
            $isValid = false;
        } else if ($local[0] == '.' || $local[$localLen - 1] == '.') {
            $isValid = false;
        } else if (preg_match('/\.\./', $local)) {
            $isValid = false;
        } else if (!preg_match('/^[A-Za-z0-9\-\.]+$/', $domain)) {
            $isValid = false;
        } else if (preg_match('/\.\./', $domain)) {
            $isValid = false;
        } else if (!preg_match('/^(\\.|[A-Za-z0-9!#%&`_=\/$\'*+?^{}|~.-])+$/', str_replace("\\", "", $local))) {
            if (!preg_match('/^"(\\"|[^"])+"$/', str_replace("\\", "", $local))) {
                $isValid = false;
            }
        }

        if ($isValid && !(checkdnsrr($domain, "MX") || checkdnsrr($domain ,"A"))) {
            $isValid = false;
        }
    }

    return $isValid;
}
0-1]+(?:(?:(?:\r\n)
?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t]
)*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ^((([a-z0-9]+[\-]{0,1})+[a-z0-9]+?\.)+[a-z0-9][a-z0-9|\-]+[a-z0-9])@([a-z0-9]+[\-|\.]{0,1}[a-z0-9]+)+(.[a-z0-9]{2,})+$
0-1]+(?:(?:(?:\r\n)?[
 \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*
)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ^([a-z0-9]+[\.|\-]{0,1}[a-z0-9](.[a-z0-9]{2,})+)$
0-1]+(?:(?:(?:\r\n)?[ \t]
)+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*)
*:(?:(?:\r\n)?[ \t])*)?(?:[^()<>@,;:\".\[\] ^([a-z0-9]+[\.|\-]{0,1}[a-z0-9]{1,})+@$
0-1]+(?:(?:(?:\r\n)?[ \t])+
|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r
\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:
\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t
]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1
]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](
?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?
:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?
:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*)|(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?
:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?
[ \t]))*"(?:(?:\r\n)?[ \t])*)*:(?:(?:\r\n)?[ \t])*(?:(?:(?:[^()<>@,;:\".\[\] 
##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|
\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>
@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"
(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t]
)*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\
".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?
:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[
\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*|(?:[^()<>@,;:\".\[\] ##代码##0-
1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(
?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)*\<(?:(?:\r\n)?[ \t])*(?:@(?:[^()<>@,;
:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([
^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\"
.\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\
]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\
[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\
r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] 
##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]
|\.)*\](?:(?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?(?:[^()<>@,;:\".\[\] ##代码##
00-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\
.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,
;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]]))|"(?
:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*))*@(?:(?:\r\n)?[ \t])*
(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".
\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t])*(?:[
^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\]
]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(?:\r\n)?[ \t])*)(?:,\s*(
?:(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\
".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(
?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[
\["()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t
])*))*@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t
])+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?
:\.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|
\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*|(?:
[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".\[\
]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)*\<(?:(?:\r\n)
?[ \t])*(?:@(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["
()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)
?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>
@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*(?:,@(?:(?:\r\n)?[
 \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,
;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\.(?:(?:\r\n)?[ \t]
)*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\
".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*)*:(?:(?:\r\n)?[ \t])*)?
(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\".
\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])*)(?:\.(?:(?:
\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z|(?=[\[
"()<>@,;:\".\[\]]))|"(?:[^\"\r\]|\.|(?:(?:\r\n)?[ \t]))*"(?:(?:\r\n)?[ \t])
*))*@(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])
+|\Z|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*)(?:\
.(?:(?:\r\n)?[ \t])*(?:[^()<>@,;:\".\[\] ##代码##0-1]+(?:(?:(?:\r\n)?[ \t])+|\Z
|(?=[\["()<>@,;:\".\[\]]))|\[([^\[\]\r\]|\.)*\](?:(?:\r\n)?[ \t])*))*\>(?:(
?:\r\n)?[ \t])*))*)?;\s*)

Answer 2

回答by koopajah

You should use the function filter_vars()to validate your input instead of your own regexp.

您应该使用该函数filter_vars()来验证您的输入，而不是您自己的正则表达式。

Example:

例子：

##代码##

More info in the documentation : http://php.net/manual/en/function.filter-var.php

文档中的更多信息：http: //php.net/manual/en/function.filter-var.php

Answer 3

回答by Kuldeep Singh

it looks like you don't really need that bigger code to just validate a email.

看起来您真的不需要那么大的代码来验证电子邮件。

##代码##

Try this one and let me know

试试这个，让我知道

Answer 4

回答by user007

try this regx it would work fine

试试这个 regx 它会工作得很好

##代码##

or php filter filter_var

或 php 过滤器 filter_var

##代码##

like

喜欢

##代码##

Answer 5

回答by Alptugay

Remove the iDat the end of the regex

删除iD正则表达式末尾的

Answer 6

回答by Mehdi Bugnard

Weird I just tried your code that works well with me ?! Try closing any chain with the character '....' instead of "...."

奇怪，我刚刚试过你的代码对我很有效？！尝试用字符“....”而不是“....”来关闭任何链

Answer 7

回答by viniciusbo

I got here looking for a solution and the answer presented by Wayne Whitty do the job, indeed.

我来到这里寻找解决方案，Wayne Whitty 提出的答案确实可以胜任。

BTW, I think it is good to mention that filter_varfunction is not RFC5321 compliant. Altought the docs does not say it is, some RFC5321 valid email address will be flagged as invalid by this function, like:

顺便说一句，我认为最好提及该filter_var功能不符合 RFC5321。尽管文档没有说明，但此功能将一些 RFC5321 有效电子邮件地址标记为无效，例如：

[email protected]
(comment)[email protected]
"this is v@lid!"@example.com
"much.more unusual"@example.com
postbox@com
admin@mailserver1
"()<>[]:,;@\"\!#$%&'*+-/=?^_`{}| ~.a"@example.org
" "@example.org

[email protected]
(评论)[email protected]
“这是 v@lid！”@example.com
“更不寻常”@example.com
邮箱@com
管理员@邮件服务器1
"()<>[]:,;@\"\!#$%&'*+-/=?^_`{}| ~.a"@example.org
" "@example.org

As presented by this comment http://php.net/manual/pt_BR/function.filter-var.php#112492

正如此评论所呈现的http://php.net/manual/pt_BR/function.filter-var.php#112492

Answer 8

回答by Geek

Use these regular expressions to perform a more thorough validation. For example it prevents adjacent periods in email address like [email protected] which is invalid according to RFC 822.

使用这些正则表达式来执行更彻底的验证。例如，它可以防止电子邮件地址中的相邻句点，如 [email protected]，根据 RFC 822 无效。

##代码##

See validate email address using regular expression in PHP.

请参阅在 PHP 中使用正则表达式验证电子邮件地址。

Answer 9

回答by Vishnu

There more than one ways to check if an e-mail is valid.

检查电子邮件是否有效的方法不止一种。

One simple way is to use this function:

一种简单的方法是使用这个函数：

##代码##

It is from a code snippet found here: Basic Email Validation in PHP

它来自此处的代码片段：Basic Email Validation in PHP

Although this implementation would work most of the time it may allow some wrong emails. The following implementation ahould be 100% accurate but is also quite complex:

尽管此实现在大多数情况下都可以工作，但它可能会允许一些错误的电子邮件。以下实现应该是 100% 准确的，但也相当复杂：

##代码##

This code is from snippet found here: Strict Email Validation in PHP

此代码来自此处的片段：Strict Email Validation in PHP

Hope this helps!

希望这可以帮助！

Answer 10

回答by BinX

Email validation regex (domain with sub domains)

电子邮件验证正则表达式（带有子域的域）

##代码##

Sample tests https://regex101.com/r/w5VBdf/20

示例测试https://regex101.com/r/w5VBdf/20

Domain with sub domains

带有子域的域

##代码##

https://regex101.com/r/4Un8Tz/2

Email username

电子邮件用户名

##代码##

https://regex101.com/r/4Un8Tz/6

在 PHP 中使用正则表达式进行电子邮件验证

提问by Wayne Whitty

回答by Wayne Whitty

回答by koopajah

回答by Kuldeep Singh

回答by user007

回答by Alptugay

回答by Mehdi Bugnard

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