21

有没有办法（或函数/类）从 CIDR 表示法中获取 IP 地址列表？

例如，我有 73.35.143.32/27 CIDR 并希望以这种表示法获取所有 IP 的列表。有什么建议么？

谢谢你。

4

14 回答 14

33

我将编辑上述 类以包含一个方法。这是我想出的代码，在那之前可能会对您有所帮助。

function cidrToRange($cidr) {
  $range = array();
  $cidr = explode('/', $cidr);
  $range[0] = long2ip((ip2long($cidr[0])) & ((-1 << (32 - (int)$cidr[1]))));
  $range[1] = long2ip((ip2long($range[0])) + pow(2, (32 - (int)$cidr[1])) - 1);
  return $range;
}
var_dump(cidrToRange("73.35.143.32/27"));

//////////////////OUTPUT////////////////////////
// array(2) {
//   [0]=>
//   string(12) "73.35.143.32"
//   [1]=>
//   string(12) "73.35.143.63"
// }
/////////////////////////////////////////////////

返回 ip 范围的低端作为数组中的第一个条目，然后返回高端作为第二个条目。

于 2011-05-02T14:54:18.037 回答
11

嗯，它是一个位掩码 - 73.35.143.32/27 意味着 27 位是网络掩码，其余的可用于分配给网络中的节点：

73.35.143.32

在二进制中是这样的（为易读性显示点）：

01001001.00100011.10001111.00100000

网络掩码为 27 位：

11111111.11111111.11111111.11100000

所以你可以把它们放在一起得到这个：

01001001.00100011.10001111.001 00000
 network prefix (27 bits)     | node address (5 bits)

从这里，您只需枚举节点地址中的所有组合（00000 为 0，11111 为 31，因此一个简单的循环就足够了），您将拥有所有可用的主机。

将此伪代码转换为 PHP 留给读者作为练习；）

哦，还有强制性的弃用警告：IPv4 现在已满，也请考虑 IPv6。

于 2011-02-08T10:21:56.757 回答
8

这是一个快速的 64 位函数，请注释您不需要的返回行。接受任何有效的 IPv4，无论是否带有有效的 CIDR 路由前缀，例如 63.161.156.0/24或63.161.156.0

<?php
function cidr2range($ipv4){
if ($ip=strpos($ipv4,'/'))
{$n_ip=(1<<(32-substr($ipv4,1+$ip)))-1;   $ip_dec=ip2long(substr($ipv4,0,$ip)); }
else
{$n_ip=0;                                   $ip_dec=ip2long($ipv4);             }
$ip_min=$ip_dec&~$n_ip;
$ip_max=$ip_min+$n_ip;
#Array(2) of Decimal Values Range
return [$ip_min,$ip_max];
#Array(2) of Ipv4 Human Readable Range
return [long2ip($ip_min),long2ip($ip_max)];
#Array(2) of Ipv4 and Subnet Range
return [long2ip($ip_min),long2ip(~$n_ip)];
#Array(2) of Ipv4 and Wildcard Bits
return [long2ip($ip_min),long2ip($n_ip)];
#Integer Number of Ipv4 in Range
return ++$n_ip;
}

为了快速运行，该函数不检查输入，但正式它应该是与以下正则表达式匹配的字符串

#^(?:((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))(?:/((?:(?:0)|(?:3[0-2])|(?:[1-2]?[0-9]))))?)$#

如果要在使用函数之前验证输入

<?php
if (is_string($ipv4) && preg_match('#^(?:((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))\.((?:0)|(?:2(?:(?:[0-4][0-9])|(?:5[0-5])))|(?:1?[0-9]{1,2}))(?:/((?:(?:0)|(?:3[0-2])|(?:[1-2]?[0-9]))))?)$#',$ipv4))
{
#This is a valid ipv4 with or without CIDR Routing Prefix
$result=cidr2range($ipv4);
print_r($result);
}

要将完整范围作为给定 IP 的数组（带或不带 CIDR 路由前缀），您可以使用以下代码，但要小心，因为例如 25.25.25.25/16 返回一个包含 65536 个元素的数组，您可以轻松用完使用较小路由前缀的内存

<?php
$result=cidr2range($ipv4);
for($ip_dec=$result[0];$ip_dec<=$result[1];$ip_dec++)
$full_range[$ip_dec]=long2ip($ip_dec);
print_r($full_range);

要快速检查给定的ipv4 是否与给定的 CIDR 匹配，您可以像本例中那样内联

<?php
$given_cidr='55.55.55.0/24';
$given_ipv4='55.55.55.55';
if(($range=cidr2range($given_cidr)) &&
($check=ip2long($given_ipv4))!==false &&
$check>=$range[0] && $check<=$range[1])
{
echo 'Yes, '.$given_ipv4.' is included in '.$given_cidr;
}
else
{
echo 'No, '.$given_ipv4.' is not included in '.$given_cidr;
}

快速检查给定的ipv4 是否与给定的 IP 数组匹配（带或不带 CIDR 路由前缀）

<?php
#This code is checking if a given ip belongs to googlebot
$given_ipv4='74.125.61.208';
$given_cidr_array=['108.59.93.43/32','108.59.93.40/31','108.59.93.44/30','108.59.93.32/29','108.59.93.48/28','108.59.93.0/27','108.59.93.64/26','108.59.93.192/26','108.59.92.192/27','108.59.92.128/26','108.59.92.96/27','108.59.92.0/27','108.59.94.208/29','108.59.94.192/28','108.59.94.240/28','108.59.94.128/26','108.59.94.16/29','108.59.94.0/28','108.59.94.32/27','108.59.94.64/26','108.59.95.0/24','108.59.88.0/22','108.59.81.0/27','108.59.80.0/24','108.59.82.0/23','108.59.84.0/22','108.170.217.128/28','108.170.217.160/27','108.170.217.192/26','108.170.217.0/25','108.170.216.0/24','108.170.218.0/23','108.170.220.0/22','108.170.208.0/21','108.170.192.0/20','108.170.224.0/19','108.177.0.0/17','104.132.0.0/14','104.154.0.0/15','104.196.0.0/14','107.167.160.0/19','107.178.192.0/18','125.17.82.112/30','125.16.7.72/30','74.125.0.0/16','72.14.192.0/18','77.109.131.208/28','77.67.50.32/27','66.102.0.0/20','66.227.77.144/29','66.249.64.0/19','67.148.177.136/29','64.124.98.104/29','64.71.148.240/29','64.68.64.64/26','64.68.80.0/20','64.41.221.192/28','64.41.146.208/28','64.9.224.0/19','64.233.160.0/19','65.171.1.144/28','65.170.13.0/28','65.167.144.64/28','65.220.13.0/24','65.216.183.0/24','70.32.132.0/23','70.32.128.0/22','70.32.136.0/21','70.32.144.0/20','85.182.250.128/26','85.182.250.0/25','80.239.168.192/26','80.149.20.0/25','61.246.224.136/30','61.246.190.124/30','63.237.119.112/29','63.226.245.56/29','63.158.137.224/29','63.166.17.128/25','63.161.156.0/24','63.88.22.0/23','41.206.188.128/26','12.234.149.240/29','12.216.80.0/24','8.34.217.24/29','8.34.217.0/28','8.34.217.32/27','8.34.217.64/26','8.34.217.128/25','8.34.216.0/24','8.34.218.0/23','8.34.220.0/22','8.34.208.128/29','8.34.208.144/28','8.34.208.160/27','8.34.208.192/26','8.34.208.0/25','8.34.209.0/24','8.34.210.0/23','8.34.212.0/22','8.35.195.128/28','8.35.195.160/27','8.35.195.192/26','8.35.195.0/25','8.35.194.0/24','8.35.192.0/23','8.35.196.0/22','8.35.200.0/21','8.8.8.0/24','8.8.4.0/24','8.6.48.0/21','4.3.2.0/24','23.236.48.0/20','23.251.128.0/19','216.239.32.0/19','216.252.220.0/22','216.136.145.128/27','216.33.229.160/29','216.33.229.144/29','216.34.7.176/28','216.58.192.0/19','216.109.75.80/28','216.74.130.48/28','216.74.153.0/27','217.118.234.96/28','208.46.199.160/29','208.44.48.240/29','208.21.209.0/28','208.184.125.240/28','209.185.108.128/25','209.85.128.0/17','213.200.103.128/26','213.200.99.192/26','213.155.151.128/26','199.192.112.224/29','199.192.112.192/27','199.192.112.128/26','199.192.112.0/25','199.192.113.176/28','199.192.113.128/27','199.192.113.192/26','199.192.113.0/25','199.192.115.80/28','199.192.115.96/27','199.192.115.0/28','199.192.115.128/25','199.192.114.192/26','199.192.114.0/25','199.223.232.0/21','198.108.100.192/28','195.16.45.144/29','192.104.160.0/23','192.158.28.0/22','192.178.0.0/15','206.160.135.240/28','207.223.160.0/20','203.222.167.144/28','173.255.125.72/29','173.255.125.80/28','173.255.125.96/27','173.255.125.0/27','173.255.125.128/25','173.255.124.240/29','173.255.124.232/29','173.255.124.192/27','173.255.124.128/29','173.255.124.144/28','173.255.124.160/27','173.255.124.48/29','173.255.124.32/28','173.255.124.0/27','173.255.124.64/26','173.255.126.0/23','173.255.122.128/26','173.255.122.64/26','173.255.123.0/24','173.255.121.128/26','173.255.121.0/25','173.255.120.0/24','173.255.117.32/27','173.255.117.64/26','173.255.117.128/25','173.255.116.192/27','173.255.116.128/26','173.255.116.0/25','173.255.118.0/23','173.255.112.0/22','173.194.0.0/16','172.102.8.0/21','172.253.0.0/16','172.217.0.0/16','162.216.148.0/22','162.222.176.0/21','180.87.33.64/26','128.177.109.0/26','128.177.119.128/25','128.177.163.0/25','130.211.0.0/16','142.250.0.0/15','146.148.0.0/17'];
echo '<pre>';
$in_range=false;
if (($given_ipv4_dec=ip2long($given_ipv4))!==false)
{
foreach($given_cidr_array as $given_cidr){
if(($range=cidr2range($given_cidr)) &&
$given_ipv4_dec>=$range[0] && $given_ipv4_dec<=$range[1])
{
$in_range=true;
echo $given_ipv4.' matched '.$given_cidr.' ('.join(array_map('long2ip',$range),' - ').")\n";
}
}
}
echo $given_ipv4.' is probably'.($in_range?'':' not').' a Googlebot IP';

希望这几行对你有所帮助……</p>

于 2017-02-16T09:35:06.710 回答
5

有一个小修复 - 当有人放置 ip 前缀时：127.0.0.15/26 此函数返回错误的最后一个 IP 地址。在此函数中，第 4 行（开始：$range[1]...）将$cidr[0]更改为$range[0] - 现在它返回的最后一个 IP 地址适用于范围内的每个 IP。

function cidrToRange($cidr) {
  $range = array();
  $cidr = explode('/', $cidr);
  $range[0] = long2ip((ip2long($cidr[0])) & ((-1 << (32 - (int)$cidr[1]))));
  $range[1] = long2ip((ip2long($range[0])) + pow(2, (32 - (int)$cidr[1])) - 1);
  return $range;
}
var_dump(cidrToRange("127.0.0.15/26"));

修复前：

array(2) {
  [0]=>
  string(9) "127.0.0.0"
  [1]=>
  string(10) "127.0.0.78"
}
string(41) "127.0.0.15/26 >> 2130706432 -> 2130706510"

修复后：

array(2) {
  [0]=>
  string(9) "127.0.0.0"
  [1]=>
  string(10) "127.0.0.63"
}
string(41) "127.0.0.15/26 >> 2130706432 -> 2130706495"
于 2017-01-16T09:44:11.147 回答
2

我想出了一个更好的主意

$ip_from= long2ip(ip2long($ip)& (-1<<(32-$net_mask)));
$ip_to= long2ip(ip2long($ip)| (~(-1<<(32-$net_mask))));

PS:$ip 是 ipv4 地址，如 60.12.34.5；$net_mask 是 int 网络掩码，如 25；

由于位移操作，它非常快

于 2016-04-07T06:08:21.543 回答
2

扩展到@jonavon的答案。如果您需要 IP 的平面列表。您可以像下面这样转换他的功能。

function cidrToRange($value) {
    $range = array();
    $split = explode('/', $value);
    if (!empty($split[0]) && is_scalar($split[1]) && filter_var($split[0], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
        $rangeStart = ip2long($split[0]) & ((-1 << (32 - (int)$split[1])));
        $rangeEnd = ip2long($split[0]) + pow(2, (32 - (int)$split[1])) - 1;

        for ($i = $rangeStart; $i <= $rangeEnd; $i++) {
            $range[] = long2ip($i);
        }
        return $range;
    } else {
        return $value;
    }
}
于 2016-08-26T14:58:29.570 回答
2

强烈推荐这个 PHP 库： https ://github.com/S1lentium/IPTools

它可以通过多种功能轻松操作网络。

例如遍历网络 IP 地址：

$network = Network::parse('192.168.1.0/24');
foreach($network as $ip) {
    echo (string)$ip . PHP_EOL;
}

// output:
192.168.1.0
...
192.168.1.255
于 2020-04-02T09:22:33.520 回答
1

我不相信这个类会返回一个 IP 列表，但它确实提供了一些有用的方法来处理 CIDR 块。

于 2011-02-08T10:14:40.880 回答
1

这将返回一个 ips 数组：

function get_list_ip($ip_addr_cidr){
    $ip_arr = explode("/", $ip_addr_cidr);    
    $bin = "";

    for($i=1;$i<=32;$i++) {
        $bin .= $ip_arr[1] >= $i ? '1' : '0';
    }

    $ip_arr[1] = bindec($bin);

    $ip = ip2long($ip_arr[0]);
    $nm = $ip_arr[1];
    $nw = ($ip & $nm);
    $bc = $nw | ~$nm;
    $bc_long = ip2long(long2ip($bc));

    for($zm=1;($nw + $zm)<=($bc_long - 1);$zm++)
    {
        $ret[]=long2ip($nw + $zm);
    }
    return $ret;
}
于 2015-12-30T09:38:59.117 回答
0

这使用匿名函数遍历 CIDR 块中的每个 IP 地址：

cidrl('194.168.0.1/28', $error_code, function($address) {
    // Do something.
    print "$address\n";
});

或者，作为一个数组：

$addresses = cidrl('194.168.0.1/28', $error_code);

来源：

function cidrl($cidr, &$error_code = 0, $callback = null) {
    $error_code = 0;
    sscanf($cidr, "%[^/]/%u", $network, $bits); 
    $addr = ip2long($network);
    if ($addr === false) {
        $error_code = 2;
        return false;
    }       

    if ($bits == 32) {
        if (is_callable($callback)) {
            $callback(long2ip($addr));
            return array(); 
        }           
        return array(long2ip($addr));
    }       

    if ($bits > 32) { 
        $error_code = 3;
        return false;
    }       

    $mask = ~(0xFFFFFFFF >> $bits); 

    $addr_start = $addr & $mask;
    $addr_end = ($addr & $mask) | ~$mask; 

    $addresses = array();
    for ($i = $addr_start; $i <= $addr_end; $i++) { 
        if (is_callable($callback)) $callback(long2ip($i));
        else $addresses[] = long2ip($i);
    }       
    return $addresses;
}

代码来自：https ://github.com/emden-norfolk/cidrl/tree/master/php

于 2016-09-20T12:38:58.207 回答
0

我之前写了一个完整的类来很好地处理这个任务（对于另一种语言），并且由于 PHP 的ip2long(...)方法，我们不需要在 PHP 中手动计算。

但我的单元测试数据可用于测试任何其他答案：

<?php
// Below has "CIDR = Minimum ... Maximum" format.
$validRangeMap = [
    '0.0.0.0/1=0.0.0.0...127.255.255.255',
    '128.0.0.0/2=128.0.0.0...191.255.255.255',
    '192.0.0.0/9=192.0.0.0...192.127.255.255',
    '192.128.0.0/11=192.128.0.0...192.159.255.255',
    '192.160.0.0/13=192.160.0.0...192.167.255.255',
    '192.168.0.0/19=192.168.0.0...192.168.31.255',
    '192.168.32.0/21=192.168.32.0...192.168.39.255',
    '192.168.40.0/23=192.168.40.0...192.168.41.255',
    '192.168.42.0/23=192.168.42.0...192.168.43.255',
    '192.168.44.0/22=192.168.44.0...192.168.47.255',
    '192.168.48.0/20=192.168.48.0...192.168.63.255',
    '192.168.64.0/18=192.168.64.0...192.168.127.255',
    '192.168.128.0/17=192.168.128.0...192.168.255.255',
    '192.169.0.0/16=192.169.0.0...192.169.255.255',
    '192.170.0.0/15=192.170.0.0...192.171.255.255',
    '192.172.0.0/14=192.172.0.0...192.175.255.255',
    '192.176.0.0/12=192.176.0.0...192.191.255.255',
    '192.192.0.0/10=192.192.0.0...192.255.255.255',
    '193.0.0.0/8=193.0.0.0...193.255.255.255',
    '194.0.0.0/7=194.0.0.0...195.255.255.255',
    '196.0.0.0/6=196.0.0.0...199.255.255.255',
    '200.0.0.0/5=200.0.0.0...207.255.255.255',
    '208.0.0.0/4=208.0.0.0...223.255.255.255',
    '224.0.0.0/4=224.0.0.0...239.255.255.255',
    '240.0.0.0/5=240.0.0.0...247.255.255.255',
    '248.0.0.0/6=248.0.0.0...251.255.255.255',
    '252.0.0.0/7=252.0.0.0...253.255.255.255',
    '254.0.0.0/8=254.0.0.0...254.255.255.255',
    '255.0.0.0/9=255.0.0.0...255.127.255.255',
    '255.128.0.0/10=255.128.0.0...255.191.255.255',
    '255.192.0.0/11=255.192.0.0...255.223.255.255',
    '255.224.0.0/12=255.224.0.0...255.239.255.255',
    '255.240.0.0/13=255.240.0.0...255.247.255.255',
    '255.248.0.0/14=255.248.0.0...255.251.255.255',
    '255.252.0.0/15=255.252.0.0...255.253.255.255',
    '255.254.0.0/16=255.254.0.0...255.254.255.255',
    '255.255.0.0/17=255.255.0.0...255.255.127.255',
    '255.255.128.0/18=255.255.128.0...255.255.191.255',
    '255.255.192.0/19=255.255.192.0...255.255.223.255',
    '255.255.224.0/20=255.255.224.0...255.255.239.255',
    '255.255.240.0/21=255.255.240.0...255.255.247.255',
    '255.255.248.0/22=255.255.248.0...255.255.251.255',
    '255.255.252.0/23=255.255.252.0...255.255.253.255',
    '255.255.254.0/24=255.255.254.0...255.255.254.255',
    '255.255.255.0/25=255.255.255.0...255.255.255.127',
    '255.255.255.128/26=255.255.255.128...255.255.255.191',
    '255.255.255.192/27=255.255.255.192...255.255.255.223',
    '255.255.255.224/28=255.255.255.224...255.255.255.239',
    '255.255.255.240/29=255.255.255.240...255.255.255.247',
    '255.255.255.248/30=255.255.255.248...255.255.255.251',
    '255.255.255.252/31=255.255.255.252...255.255.255.253',
    '255.255.255.254/32=255.255.255.254...255.255.255.254',
];

例子

我们可以测试Jonavon 的答案，例如：

foreach ($validRangeMap as $entry) {
    $expected = preg_split('/(=|(\.\.\.))+/', $entry);
    $actual = cidrToRange($expected[0]);

    if ($actual[0] !== $expected[1]) {
        echo "Test-Failed! '$actual[0]' should be equal '$expected[1]' <br>" . PHP_EOL;
    } else if ($actual[1] !== $expected[2]) {
        echo "Test-Failed! '$actual[1]' should be equal '$expected[2]' <br>" . PHP_EOL;
    } else {
        echo "Tested '$expected[0]' CIDR <br>" . PHP_EOL;
    }
}

function cidrToRange($cidr) {
  $range = array();
  $cidr = explode('/', $cidr);
  $range[0] = long2ip((ip2long($cidr[0])) & ((-1 << (32 - (int)$cidr[1]))));
  $range[1] = long2ip((ip2long($range[0])) + pow(2, (32 - (int)$cidr[1])) - 1);
  return $range;
}

请注意，它通过了测试。

于 2021-07-03T07:53:10.250 回答
-1

嘿。我还需要此功能，并编辑其他 1 个以返回范围内所有 IP 地址的列表。这将从 CIDR Notation 返回 IP 地址列表。好好享受 ;）

<?php 

    $ip_addr_cidr = "192.256.0.0/16";
    $ip_arr = explode('/', $ip_addr_cidr);

    $bin = '';
    for($i=1;$i<=32;$i++) {
        $bin .= $ip_arr[1] >= $i ? '1' : '0';
    }
    $ip_arr[1] = bindec($bin);

    $ip = ip2long($ip_arr[0]);
    $nm = ip2long($ip_arr[1]);
    $nw = ($ip & $nm);
    $bc = $nw | (~$nm);

    echo "Number of Hosts:    " . ($bc - $nw - 1) . "<br/>";
    echo "Host Range:         " . long2ip($nw + 1) . " -> " . long2ip($bc - 1) . "<br/>". "<br/>";

    for($zm=1;($nw + $zm)<=($bc - 1);$zm++)
        {
        echo long2ip($nw + $zm).  "<br/>";
        }

    ?>
于 2012-10-25T10:15:20.340 回答
-1

Kosmonaft 脚本的固定版本：

function get_list_ip($ip_addr_cidr){

        $ip_arr = explode("/", $ip_addr_cidr);    
        $bin = "";

        for($i=1;$i<=32;$i++) {
            $bin .= $ip_arr[1] >= $i ? '1' : '0';
        }

        $ip_arr[1] = bindec($bin);

        $ip = ip2long($ip_arr[0]);
        $nm = $ip_arr[1];
        $nw = ($ip & $nm);
        $bc = $nw | ~$nm;
        $bc_long = ip2long(long2ip($bc));

        echo "Number of Hosts:    " . ($bc_long - $nw - 1) . "<br/>";
        echo "Host Range:         " . long2ip($nw + 1) . " -> " . long2ip($bc - 1) . "<br/>". "<br/>";

        for($zm=1;($nw + $zm)<=($bc_long - 1);$zm++)
        {
            echo long2ip($nw + $zm).  "<br/>";
        }
    }
于 2015-10-19T10:12:21.427 回答
-1

我在以前的版本中遇到了一些问题，各种 PHP 错误，如未定义的偏移量等。

我发现我认为没有错误的更好方法，如下所述。

这采用 IPV4 CIDR 表示法 IP 地址，可用于获取 CIDR 范围的开始/结束 IP 地址或计算 IP 地址数据库中 IP 地址的总数。

    $count = 0;
    $result = $sia_db_con->query("SELECT `ip_address` FROM `ip4` WHERE `ip_ban_active`='True' ORDER BY ip4.added ASC");
while ($row = $result->fetch_array()) {
    $pos = strpos($row[0], "/");
    $ip_arr = [0 => substr($row[0], 0, $pos), 1 => substr($row[0], $pos+1)];
    $start = cidr2ip($ip_arr)[0];
    $end = cidr2ip($ip_arr)[1];
    $count = $count + (ip2long($end) - ip2long($start)) + 1;
}
    unset($result, $row, $pos, $ip_arr, $start, $end, $range);

function cidr2ip($cidr) {
    $start = ip2long($cidr[0]);
    $nm = $cidr[1];
    $num = pow(2, 32 - $nm);
    $end = $start + $num - 1;
    $range = [0 => $cidr[0], 1 => long2ip($end)];
    unset($start, $nm, $num, $end);
    return $range;
}

这里的秘密是我创建 $ip_arr 变量的方式。我没有使用 PHP explode ，而是为每个 IP 地址手动设置数组维度。这当然是代码的数据库版本，并循环访问数据库中满足搜索条件的所有 IP 地址。

于 2017-07-12T19:08:10.343 回答