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.