Summary of the simplest method to verify email and IP address in PHP, IP is the simplest_PHP tutorial

A summary of the simplest ways to verify email and IP address in PHP, IP is the simplest

Verifying email, url, and numbers during development are some of our commonly used examples. The verification email is organized below , url, digital program, if you are interested, you can refer to it.

The example code is as follows:

public static function isEmail( $email ) 
{ 
return preg_match("/^([a-z0-9]*[-_＼.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[＼.][a-z]{2,4}([＼.][a-z]{2})?$/i" , $email ); 
} 
public static function isNumber( $num ) 
{ 
return is_numeric( $num ); 
} 
public static function isUrl( $url , $preg = false ) 
{ 
if( $preg ) 
{ 
$status = preg_match ( "/^([^:＼/＼/])+＼:＼/＼/[＼w-]+＼.[＼w-.＼?＼/]+$/" , $url ); 
} 
else 
{ 
$status = filter_var( $url , FILTER_VALIDATE_URL ); 
} 
return $status; 
} 

Supplement: Use PHP’s built-in functions to operate.

php verification email, the code is as follows:

$email = 'fengdingbo@gmail.com';             
$result = filter_var($email, FILTER_VALIDATE_EMAIL); 
var_dump($result); // string(20) "fengdingbo@gmail.com" 

php verification url address, the code is as follows:

$url = "http://www.bkjia.com"; 
$result = filter_var($url, FILTER_VALIDATE_URL); 
var_dump($result); // string(25) "http://www.bkjia.com" 

php verify ip address, the code is as follows:

$url = "192.168.1.110"; 
$result = filter_var($url, FILTER_VALIDATE_IP); 
var_dump($result); // string(13) "192.168.1.110" 
// 该方法也可以用来验证ipv6。 
$url = "2001:DB8:2de::e13";              
$result = filter_var($url, FILTER_VALIDATE_IP); 
var_dump($result); // string(17) "2001:DB8:2de::e13"

The above is the simplest method to verify email and IP address in PHP. I hope it will be helpful to everyone's learning.

http://www.bkjia.com/PHPjc/1066500.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1066500.htmlTechArticleA summary of the simplest methods for verifying email and IP addresses in PHP. IP is the simplest way to verify email, url, and numbers during development. Some examples we commonly use, below are the verification emails, URLs, and digital programs...