How to handle the IP address and subnet mask in PHP

The Ip2long IP address is converted to an integer type.
Long2ip integer data is converted to IP.

The subnet mask is converted to a mask length mode:
$slash _notation = strlen (Preg_replace ("/0/", "", Decbin (Ip2long ($subnet _mask)));
$bits =strpos (Decbin (Ip2long ($mask)), "0");

The subnet mask bit length is converted into a subnet mask form:
$mask = 0xFFFFFFFF << (32-$mask);
$mask = POW (2,32)-pow (2, (32-$mask));

Determine if two addresses are within a subnet:
<?php
function Matchcidr ($addr, $CIDR) {
List ($ip, $mask) = explode ('/', $CIDR);
Return (Ip2long ($addr) >> (32-$mask) = = Ip2long ($ip) >> (32-mask));
}
?>

A class of IPv4:
<?php

//--------------
IPv4 class
Class IPv4
{
var $address;
var $netbits;

//--------------
Create New Class
function IPv4 ($address, $netbits)
{
$this->address = $address;
$this->netbits = $netbits;
}

//--------------
Return the IP address
function address () {return ($this->address);}

//--------------
Return the Netbits
function Netbits () {return ($this->netbits);}

//--------------
Return the netmask
function netmask ()
{
Return (Long2ip (Ip2long ("255.255.255.255")
<< (32-$this->netbits)));
}

//--------------
Return the network, the address sits in
function Network ()
{
Return (Long2ip ((Ip2long ($this->address))
& (Ip2long ($this->netmask ())));
}

//--------------
Return the broadcast, the address sits in
function Broadcast ()
{
Return (Long2ip (Ip2long ($this->network ())
| (~ (Ip2long ($this->netmask ()))));
}

//--------------
Return the inverse mask of the netmask
function Inverse ()
{
Return (Long2ip (~ (Ip2long ("255.255.255.255")
<< (32-$this->netbits)));
}

}

$ip = new IPv4 ("192.168.2.1", 24);
Print "Address: $ip->address () \ n";
Print "Netbits: $ip->netbits () \ n";
Print "Netmask: $ip->netmask () \ n";
Print "Inverse: $ip->inverse () \ n";
Print "Network: $ip->network () \ n";
Print "Broadcast: $ip->broadcast () \ n";
?>

This approach is more creative:
For those poor little people using PHP 3, here's an ip2long:
<?php
if (!function_exists ("Ip2long")) {
function Ip2long ($IP) {
$ex = Explode (".", $ip);
if (count ($ex)!=4) return-1;
List ($a, $b, $c, $d) = $ex;
$a = $a *16777216;
$b = $b *65536;
$c = $c *256;
Return $a + $b + $c + $d;
}
}
?>

#!/usr/local/bin/php
<?
$ip _addr = "172.14.1.57";
$subnet _mask = "255.255.255.0";

$ip = Ip2long ($ip _addr);
$NM = Ip2long ($subnet _mask);
$NW = ($ip & $nm);
$BC = $NW | (~ $nm);

echo "IP address:". Long2ip ($IP). "\ n";
echo "Subnet Mask:". Long2ip ($NM). "\ n";
echo "Network Address:". Long2ip ($NW). "\ n";
echo "Broadcast Address:". Long2ip ($BC). "\ n";
echo "Number of Hosts:". ($BC-$NW-1). "\ n";
echo "Host Range:". Long2ip ($NW + 1). "." Long2ip ($BC-1). "\ n";
?>

Produces the output:

IP address:172.14.1.57
Subnet mask:255.255.255.0
Network address:172.14.1.0
Broadcast address:172.14.1.255
Number of hosts:254
Host range:172.14.1.1-172.14.1.254

How to handle the IP address and subnet mask in PHP