php和js根据子网掩码和ip计算子网

 php

$ip = \'192.168.6.1\';
$mask = \'255.255.2.0\';
$sub_net = array();//子网
$ip_explode = explode(\'.\', $ip);
$mask_explode = explode(\'.\', $mask);
foreach ($ip_explode as $key => $ip_num) {
    $sub_net[] = (int)$ip_num & (int)$mask_explode[$key];
}
$sub_net = implode(\'.\', $sub_net);
echo $sub_net;

 

 js

var ip = \'192.168.6.1\';
var mask = \'255.255.255.0\';
var sub_net = [];//子网
var ip_explode = ip.split(\'.\');
var mask_explode = mask.split(\'.\');
    console.log(\'ip_explode=\'+ip_explode);  
    console.log(\'mask_explode=\'+mask_explode);  for (var i = 0, num = ip_explode.length; i < num; i++) {
    c = parseInt(ip_explode[i]) & parseInt(mask_explode[i]);
    console.log(\'c=\'+c);  
    sub_net.push(c);
}
sub_net = sub_net.join(\'.\');
console.log(sub_net);