long2ip() -- 将网络地址转换为点分十进制形式(IPv4)

beyes

long2ip() 可以将 IPv4 的网络地址(一般为长整型)形式转换为点分十进制形式。它的作用类似于 socket  C 库函数中的 inet_ntop()  。

测试代码：

[PHP] 纯文本查看 复制代码

<?php

for($i = 0; $i < 20; $i++) {
        echo RandIPAddr();
        echo "<br>";
}

function RandIPAddr()
{
        $ip_long = array(
                        array('607649792', '608174079'), //36.56.0.0-36.63.255.255
                        array('1038614528', '1039007743'), //61.232.0.0-61.237.255.255
                        array('1783627776', '1784676351'), //106.80.0.0-106.95.255.255
                        array('2035023872', '2035154943'), //121.76.0.0-121.77.255.255
                        array('2078801920', '2079064063'), //123.232.0.0-123.235.255.255
                        array('-1950089216', '-1948778497'), //139.196.0.0-139.215.255.255
                        array('-1425539072', '-1425014785'), //171.8.0.0-171.15.255.255
                        array('-1236271104', '-1235419137'), //182.80.0.0-182.92.255.255
                        array('-770113536', '-768606209'), //210.25.0.0-210.47.255.255
                        array('-569376768', '-564133889'), //222.16.0.0-222.95.255.255
                        );

        $rand_key = mt_rand(0, 9);
        $ip = long2ip(mt_rand($ip_long[$rand_key][0], $ip_long[$rand_key][1]));

        return $ip;
}
?>

运行输出：

222.86.67.187
182.90.214.227
210.39.82.46
171.13.146.37
... ...
106.93.5.102
210.36.162.88

上面代码中，数组里存放的是经过 ip2long() 函数转换过的用以网络传输的 IP 地址长整型形式。它的逆函数是 ip2long()