VaultPress::ip_in_cidr PHP Méthode

    function ip_in_cidr($ip, $cidr)
    {
        list($net, $mask) = explode('/', $cidr);
        return (ip2long($ip) & ~((1 << 32 - $mask) - 1)) == (ip2long($net) & ~((1 << 32 - $mask) - 1));
    }