本文实例讲述了php和js实现根据子网掩码和ip计算子网功能。分享给大家供大家参考，具体如下：
php
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<?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;
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运行结果：
192.168.2.0
js
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<script>
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);
</script>
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运行结果：
希望本文所述对大家PHP程序设计有所帮助。
原文链接：https://www.cnblogs.com/jdhu/p/4246228.html