<?php
$ip = '127.0.0.1';
function test($ip) {
if (false !== strpos($ip, '/')) {
list($address, $netmask) = explode('/', $ip, 2);
if ($netmask < 1 || $netmask > 32) {
return false;
}
} else {
$address = $ip;
$netmask = 32;
}
$netmask = str_pad(str_pad('', $netmask, '1'), 32, '0');
$in_addr = '';
foreach(array_map('bindec', str_split($netmask, 8)) as $char) {
$in_addr .= pack('C*', $char);
}
$netmask = inet_pton(inet_ntop($in_addr));
$network = inet_pton($address) & $netmask;
return [inet_ntop($network), inet_ntop($network | ~$netmask)];
}
var_dump(test('127.0.0.1'));
var_dump(test('10.0.0.3/29'));
var_dump(test('192.168.1.16/8'));
preferences:
42.05 ms | 402 KiB | 5 Q