thinkphp5 在ipv6网络中获取IP都为0.0.0.0的解决方式

查找原因后, 发现是因为ip2long不支持ipv6.

那来解决这个问题, php新增gmp插件, 然后代码改造如下:

/**
     * 获取客户端IP地址
     * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
     * @param boolean $adv  是否进行高级模式获取（有可能被伪装）
     * @return mixed
     */
    public function ip($type = 0, $adv = true)
    {
        $type      = $type ? 1 : 0;
        static $ip = null;
        if (null !== $ip) {
            return $ip[$type];
        }

        $httpAgentIp = Config::get('http_agent_ip');

        if ($httpAgentIp && isset($_SERVER[$httpAgentIp])) {
            $ip = $_SERVER[$httpAgentIp];
        } elseif ($adv) {
            if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
                $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
                $pos = array_search('unknown', $arr);
                if (false !== $pos) {
                    unset($arr[$pos]);
                }
                $ip = trim(current($arr));
            } elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
                $ip = $_SERVER['HTTP_CLIENT_IP'];
            } elseif (isset($_SERVER['REMOTE_ADDR'])) {
                $ip = $_SERVER['REMOTE_ADDR'];
            }
        } elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        // IP地址合法验证仅ipv4
        //$long = sprintf("%u", ip2long($ip));
        //$ip   = $long ? [$ip, $long] : ['0.0.0.0', 0];
        if (filter_var($ip, FILTER_VALIDATE_IP)) {
            if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
                $long=$this->ip2long6($ip);
            }else{
                $long=sprintf("%u", ip2long($ip));
            }
            $ip = [$ip, $long];
        }else{
            $ip = ['0.0.0.0', 0];
        }
        return $ip[$type];
    }
    //新增ipv6
    public function ip2long6($ipv6)
    {
        $ip_n = inet_pton($ipv6);
        $bits = 15; // 16 x 8 bit = 128bit
        $ipv6long = '';
        while ($bits >= 0) {
            $bin = sprintf("%08b", (ord($ip_n[$bits])));
            $ipv6long = $bin . $ipv6long;
            $bits--;
        }
        return gmp_strval(gmp_init($ipv6long, 2), 10);
    }