Email verification codes are mostly unable to verify one-letter domain names or one-letter usernames, such as: i@fufuok.com or fufu@9.cn. The solution is as follows:
1. Do not judge the total length. You can add the length judgment yourself;
2, supports domain name suffixes such as .net.cn and .com.cn;
3. The email name part starts with a letter or number, and can have "-" and "_" symbols in the middle;
4. The domain name part starts with a letter or number, and there can be "-" and "_" symbols in the middle;
PHP email verification regular expression
The code is as follows
| 代码如下 |
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preg_match("/^[0-9a-zA-Z]+@(([0-9a-zA-Z]+)[.])+[a-z]{2,4}$/i",$email );
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Copy code
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| 代码如下 |
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/**
* 自己修整的一个邮箱正则表达式
* 琼台博客
*/
echo '';
function c_email($email){
$reg='/^([a-zA-Z0-9]{1,20})(([_-.])?([a-zA-Z0-9]{1,20}))*@([a-zA-Z0-9]{1,20})(([-_])?([a-zA-Z0-9]{1,20}))*(.[a-z]{2,4}){1,2}$/';
if(preg_match($reg,$email))
return true;
return false;
}
$email = 'mail@lizhong.me';
$check_result = c_email($email);
if($check_result){
echo '邮箱格式正确';
}else{
echo '邮箱格式错误';
}
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preg_match("/^[0-9a-zA-Z]+@(([0-9a-zA-Z]+)[.])+[a-z]{2,4}$/i", $email );
| 代码如下 |
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class Reg
{
public $mail;
function __construct()
{
$this->mail = $_POST["mail"];
}
function RegMail()
{
if(preg_match("/^[0-9a-zA-Z]+(?:[_-][a-z0-9-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*.[a-zA-Z]+$/i", $this->mail))
{
echo "";
}
else
{
echo "";
}
}
}
$r = new Reg();
$r->RegMail();
$strings = "abc@163.com";
if(preg_match("/^[0-9a-zA-Z]+(?:[_-][a-z0-9-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*.[a-zA-Z]+$/i",$strings))
{
echo"验证成功！是邮箱地址。";
}
else
{
echo"不是邮箱地址！";
}
?>
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Example
| The code is as follows
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/**
* An email regular expression modified by myself
* Qiongtai Blog
*/
echo '';
function c_email($email){
$reg='/^([a-zA-Z0-9]{1,20})(([_-.])?([a-zA-Z0-9]{1,20}))*@ ([a-zA-Z0-9]{1,20})(([-_])?([a-zA-Z0-9]{1,20}))*(.[a-z]{2, 4}){1,2}$/';
If(preg_match($reg,$email))
return true;
Return false;
}
$email = 'mail@lizhong.me';
$check_result = c_email($email);
if($check_result){
echo 'The email format is correct';
}else{
echo 'Email format error';
}
Email verification class
| The code is as follows
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Copy code
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class Reg<🎜>
{<🎜>
Public $mail;<🎜>
Function __construct()<🎜>
{<🎜>
$this->mail = $_POST["mail"];
}
Function RegMail()
{
if(preg_match("/^[0-9a-zA-Z]+(?:[_-][a-z0-9-]+)*@[a-zA-Z0-9]+(?:[ -.][a-zA-Z0-9]+)*.[a-zA-Z]+$/i", $this->mail))
{
echo "";
}
else
{
echo "";
}
}
}
$r = new Reg();
$r->RegMail();
$strings = "abc@163.com";
if(preg_match("/^[0-9a-zA-Z]+(?:[_-][a-z0-9-]+)*@[a-zA-Z0-9]+(?:[ -.][a-zA-Z0-9]+)*.[a-zA-Z]+$/i",$strings))
{
echo "Verification successful! It's the email address.";
}
else
{
Echo "Not an email address!";
}
?>
http://www.bkjia.com/PHPjc/631574.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631574.htmlTechArticleEmail verification codes are mostly unable to verify one-letter domain names or one-letter usernames, such as: i@fufuok. com or fufu@9.cn. The solution is as follows: 1. Do not judge the total length, judge the length...
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