最近发现网站统计中有一些IP的结果存储的是0,经过捕捉发现获取到的IP地址是IPv6的,使用IPv4的方法转换就会有问题,接下来为大家介绍一下php中ipv6转纯数字和反转的方法,有需要的小伙伴可以参考一下:
1、IPv6转换为数字:
(1)、方法一
function ip2long_v6($ip) { $ip_n = inet_pton($ip); $bin = ''; for ($bit = strlen($ip_n) - 1; $bit >= 0; $bit--) { $bin = sprintf('%08b', ord($ip_n[$bit])) . $bin; } if (function_exists('gmp_init')) { return gmp_strval(gmp_init($bin, 2), 10); } elseif (function_exists('bcadd')) { $dec = '0'; for ($i = 0; $i < strlen($bin); $i++) { $dec = bcmul($dec, '2', 0); $dec = bcadd($dec, $bin[$i], 0); } return $dec; } else { trigger_error('GMP or BCMATH extension not installed!', E_USER_ERROR); } } echo ip2long_v6('2409:8962:f08:bc70:dd8d:3271:9735:1afb'); //输出结果为38位数字:47901724979112247990722674108375833339
(2)、方法二(需要在php.ini中开启php_gmp扩展)
function ip2long_v6($ip){ $ip_n = inet_pton($ip); $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); }
2、将IPv6转换后数字反转成IP:
function long2ip_v6($dec) { if(strlen($dec) > 10){ if (function_exists('gmp_init')) { $bin = gmp_strval(gmp_init($dec, 10), 2); } elseif (function_exists('bcadd')) { $bin = ''; do { $bin = bcmod($dec, '2') . $bin; $dec = bcdiv($dec, '2', 0); } while (bccomp($dec, '0')); } else { trigger_error('GMP or BCMATH extension not installed!', E_USER_ERROR); } $bin = str_pad($bin, 128, '0', STR_PAD_LEFT); $ip = array(); for ($bit = 0; $bit <= 7; $bit++) { $bin_part = substr($bin, $bit * 16, 16); $ip[] = dechex(bindec($bin_part)); } $ip = implode(':', $ip); }else{ $ip = long2ip($dec); } return inet_ntop(inet_pton($ip)); } echo long2ip_v6('47901724979112247990722674108375833339'); //输出结果:2409:8962:f08:bc70:dd8d:3271:9735:1afb