php验证邮箱和ip地址最简单方法汇总_php技巧

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; }

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

$url = "http://www.jb51.net"; $result = filter_var($url, FILTER_VALIDATE_URL); var_dump($result); // string(25) "http://www.jb51.net"

$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"