PayPal\Core\PPUtils::isIPv4 PHP 메소드

Determines if valid IPv4 or not

public static isIPv4 ( $ip ) : boolean
$ip
리턴	boolean

    public static function isIPv4($ip)
    {
        return filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
    }

PPUtils